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<rss version="2.0"><channel><title><![CDATA[Maintenance, Oils/Fluids, Detailing & Rust Prevention Latest Topics]]></title><link>https://www.gm-trucks.com/forums/forum/47-maintenance-oilsfluids-detailing-rust-prevention/</link><description><![CDATA[Maintenance, Oils/Fluids, Detailing & Rust Prevention Latest Topics]]></description><language>en</language><item><title>OCI, not when but why?</title><link>https://www.gm-trucks.com/forums/topic/261018-oci-not-when-but-why/</link><description><![CDATA[<p style="text-align:center;">
	<span style="font-size:16px;">I thought about asking this question as a poll, but I could run the Greek alphabet aground with the choices. </span>
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<p style="text-align:center;">
	 
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<p style="text-align:center;">
	<span style="font-size:16px;">Why do <strong>you</strong> change your oil?</span>
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	<span style="font-size:16px;"><img src="https://cdn.jsdelivr.net/gh/twitter/twemoji@14.0.2/assets/72x72/1f914.png" class="ipsEmoji" alt="🤔"></span>
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	<span style="font-size:16px;">Explain, please.</span>
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]]></description><guid isPermaLink="false">261018</guid><pubDate>Thu, 10 Nov 2022 02:38:00 +0000</pubDate></item><item><title>Some Assembly is Required</title><link>https://www.gm-trucks.com/forums/topic/268929-some-assembly-is-required/</link><description><![CDATA[<p>
	<span style="font-size:16px;">Some Assembly Required</span>
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<p>
	<span style="font-size:16px;"> </span>
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<p>
	<span style="font-size:16px;">You might as well ask a magician how the trick is done as to ask a blender what’s in the bottle. And I imagine that would be true if it were not for the fact that everything in the universe MUST obey the rules/laws of the universe. They are immutable. We can define our world with few exceptions or explain it in the rules of physics, chemistry and mathematics. The languages we use to make sense of what seems to be magic. The few we cannot explain only means a lack of data or a lack of understanding that data. </span>
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<p>
	<span style="font-size:16px;">Do I have to know the acceleration of gravity, a property of physics represented by a mathematical model, to be certain beyond a shadow of a doubt that if I walk off my roof I will fall to whatever is below me? Do I have to have a Doctorate in biology to know for certain that planting a kernel of corn will grow a plant of corn? No! Correlated observations will instruct me as to the certainty of the suns rising and setting. </span>
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	<span style="font-size:16px;">Observations of physical properties OR the written records of another's observations. It is what a test result is, isn’t it? The tests is just a method to objectify, quantify and correlate observations into repeatable units of observation. </span>
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	<span style="font-size:16px;">There is also the ‘thought experiment’ method Einstein was so fond of. One may ask, for example, can something be created from nothing? What do you conclude about our universe when you observe Entropy in action? </span>
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<p>
	<span style="font-size:16px;">Sometimes to understand a thing we need more than one input or observation. For example, watching the sun rise in the east and set in the west doesn’t tell you if the earth orbits the sun or the sun orbits the earth. Oh this one is important indeed. </span>
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<p>
	<span style="font-size:16px;">Point is, you don’t need to know all there is to know nor do your observations stand in a vacuum. Your life it short. It’s okay to use others observations and records. It’s why you hired a lab to do some of the heavy lifting. It’s why blenders publish, to one degree or another, ‘Product Data Sheets” whose contend is assured in broad strokes by regulations on “Truth in Advertising” laws. Or, internally policed by a companies need to maintain a reputation to sell into a market. It’s not perfect and cheaters get caught but it is what you have to work with. </span>
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<p>
	<span style="font-size:16px;">I avoid like plague the arguments of “ the act of measurement alters the measurement’ or instruments being ISO certified to the National Bureau of Standards and demanding an exact accounting of the chain of evidence. I’m not deciding the fate of a human life in open court on on a operating table, I’m finding the truth, as well as it can be known, about what products I choose to use based on my confidence in the testing, the results, the observations and the reputations of others. This means:</span>
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<p align="center" style="text-align:center;">
	<span style="font-size:20px;"><b>SOME ASSEMBLY IS REQUIRED</b></span>
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]]></description><guid isPermaLink="false">268929</guid><pubDate>Tue, 29 Oct 2024 20:22:06 +0000</pubDate></item><item><title>Post your latest oil change.</title><link>https://www.gm-trucks.com/forums/topic/214778-post-your-latest-oil-change/</link><description><![CDATA[<p>
	Thought that this might be a thread of interest and maybe a way for some to keep track of their oil changes. Basically post the vehicle you changed the oil on, at what mileage and how long you go on the oil change. If you follow the oil life monitor (OLM) then post at what percent it was reading at the time of the change. Also what brand oil/weight and oil filter you use.<br /><br />
	Here is an <span style="color:#FF0000;"><span style="font-size:18px;">example</span></span>;<br /><br />
	7/21/18<br />
	2002 Silverado<br />
	182,157 total miles on truck<br />
	5,147 miles on oil OLM at 0%<br />
	Oil AMSOIL Signature Series 10w-30 out SS 0w-20 in<br />
	Ea064 filter out and Ea030 filter on<br />
	Sent sample off to Dysonanalysis to see how this sample did. Reason for so short is I changed out the oil pan, intake gaskets and rear main seal so there will be some sealant in there somewhere. My oil consumption went to 0 after the intake gasket change. So it must have had a small leak. I use to go through a qt in 5k miles. No more smoke on start up after pulling the trailer either so I'm happy.<br /><br />
	Also I have been running E85 for most of this oil change and I want to see what effect it has had on the oil.
</p>]]></description><guid isPermaLink="false">214778</guid><pubDate>Fri, 07 Sep 2018 12:17:18 +0000</pubDate></item><item><title>Linear Logic ScanGauge III</title><link>https://www.gm-trucks.com/forums/topic/272475-linear-logic-scangauge-iii/</link><description><![CDATA[<p>
	I have two Model II units and like them but this III model is a much better way to skin that cat. This is the summary page from my first calibration tank. 
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<p style="text-align:center;">
	<img class="ipsImage ipsImage_thumbnailed" data-fileid="181687" data-ratio="75.00" width="640" alt="image.jpeg.4a015b2633a4b419b7c6c6643281df14.jpeg" data-src="https://www.gm-trucks.com/forums/uploads/monthly_2025_04/image.jpeg.4a015b2633a4b419b7c6c6643281df14.jpeg" src="https://www.gm-trucks.com/forums/applications/core/interface/js/spacer.png" />
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<p style="text-align:center;">
	This (below) is one of three screens you program your gauges into. The other two I'm still building but you can load between 4 and 9 per page plus this graphing page. 
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<p style="text-align:center;">
	When you initialize the unit to finds what is available and loads pages you choose from. It also detects protocols to there isn't any fuss nor muss.
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<p style="text-align:center;">
	There are even more X Gauges that can be loaded or sought out with the device. Also reads and clears OBDII trouble codes.
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<p style="text-align:center;">
	<img class="ipsImage ipsImage_thumbnailed" data-fileid="181688" data-ratio="73.94" width="614" alt="image.jpeg.745a610e50bf56c428357dc0c096ab8c.jpeg" data-src="https://www.gm-trucks.com/forums/uploads/monthly_2025_04/image.jpeg.745a610e50bf56c428357dc0c096ab8c.jpeg" src="https://www.gm-trucks.com/forums/applications/core/interface/js/spacer.png" />
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]]></description><guid isPermaLink="false">272475</guid><pubDate>Sun, 06 Apr 2025 02:31:23 +0000</pubDate></item><item><title>Post your UOA, (used oil analysis) here</title><link>https://www.gm-trucks.com/forums/topic/256890-post-your-uoa-used-oil-analysis-here/</link><description><![CDATA[<p>
	Here is a place to post everyone's UOA's.  Doesn't have to be from your truck.  I figured it would be cool to see other vehicles as well. It can give us a better understanding on all the manufactures, even if you do a UOA on your lawnmower.     This way we can compare how our engines are wearing. 
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<p>
	I'll start and this one is from my daughters 2012 Cruze 1.4 turbo and from <span><a href="https://www.gm-trucks.com/forums/topic/255707-synthetic-advantage-iso-certified-oil-analysis/" title="Synthetic Advantage ISO certified Oil Analysis (Click and hold to edit title)" rel=""><span>Synthetic Advantage ISO certified Oil Analysis </span> </a> </span>
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<p>
	<img class="ipsImage ipsImage_thumbnailed" data-fileid="162601" data-ratio="128.00" width="500" alt="2012cruze.jpg.ed55eb115c42b7083913e6da4aaf06af.jpg" data-src="https://www.gm-trucks.com/forums/uploads/monthly_2022_04/2012cruze.jpg.ed55eb115c42b7083913e6da4aaf06af.jpg" src="https://www.gm-trucks.com/forums/applications/core/interface/js/spacer.png" />
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]]></description><guid isPermaLink="false">256890</guid><pubDate>Fri, 29 Apr 2022 13:42:42 +0000</pubDate></item><item><title>Another oil thread </title><link>https://www.gm-trucks.com/forums/topic/236554-another-oil-thread/</link><description><![CDATA[<p><p>If anyone is interested.  </p><p> </p><p></p><div class="ipsEmbeddedVideo" contenteditable="false"><div><iframe width="480" height="270" frameborder="0" allow="accelerometer; autoplay; encrypted-media; gyroscope; picture-in-picture" allowfullscreen="" data-embed-src="https://www.youtube.com/embed/l9il_piyuT8?feature=oembed"></iframe></div></div><p> </p><p> </p><p>Sent from my iPhone using Tapatalk</p></p>]]></description><guid isPermaLink="false">236554</guid><pubDate>Tue, 17 Mar 2020 04:50:56 +0000</pubDate></item><item><title>School me on window tinting</title><link>https://www.gm-trucks.com/forums/topic/275321-school-me-on-window-tinting/</link><description><![CDATA[<p>
	I realize this is not specific to just GM trucks. I'd like to get the front door windows on my Silverado tinted and have no idea regarding costs or the benefits of different types of films. I got a quote from a mobile guy who appears to have a good reputation:
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<p>
	<span style="color:#000000;font-size:12px;">2 Front Doors:</span><br style="color:#000000;font-size:12px;" />
	<span style="color:#000000;font-size:12px;">•</span><span style="color:#000000;font-size:12px;"> </span><span style="color:#000000;font-size:12px;">Standard Dyed Film: $169</span><br style="color:#000000;font-size:12px;" />
	<span style="color:#000000;font-size:12px;">•</span><span style="color:#000000;font-size:12px;"> </span><span style="color:#000000;font-size:12px;">Carbon Film: $239</span><br style="color:#000000;font-size:12px;" />
	<span style="color:#000000;font-size:12px;">•</span><span style="color:#000000;font-size:12px;"> </span><span style="color:#000000;font-size:12px;">Nano Ceramic Film: $329</span>
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<p>
	<span style="color:rgb(0,0,0);">He recommends tinting all the glass (except front windshield, state laws) with Carbon or Nano tint for superior heat resistance and UV blocking. Says the factory tint on the sides and rear doesn't do much, and can do those in clear for the heat/uv benefit if I don't want them to appear any darker than they already. The rear glass looks about 25% visible light transmission from the factory. I'd like the front door glass to match the rear, visually, but don't know if 25% will be too dark for everyday driving. The truck is a black Trail Boss (factory black wheels, black color-matched bumpers, grille). I'm giggling a little bit because, unintentionally, my truck is looking very 'murdered'. Remember 25 years ago when people would go to great lengths to make everything on their vehicle black? That's just how this one is turning out...lol.</span>
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	Is 'Nano Ceramic' really worth the extra cost (without knowing what specific brand/grade he's using)?
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<p>
	Does the factory tint in the rear actually suck, i.e. is it worth doing a clear tint on those for heat and UV? Again, black truck, the thing cooks in any amount of outdoor light. Would I even notice a difference?
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]]></description><guid isPermaLink="false">275321</guid><pubDate>Mon, 06 Oct 2025 22:45:10 +0000</pubDate></item><item><title>Ethanol Fuels</title><link>https://www.gm-trucks.com/forums/topic/257850-ethanol-fuels/</link><description><![CDATA[<p style="text-align:center;">
	<strong><span style="font-family:Arial, Helvetica, sans-serif;"><span style="font-size:24px;">Ethanol E-**</span></span><span style="font-size:20px;"><span style="font-family:'Comic Sans MS', cursive;"> </span></span></strong>
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<p>
	<span style="font-size:16px;">6/30/2022</span>
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<p>
	<span style="font-size:16px;">Recently the price of Regular Grade Gasoline has risen high enough that E-85, at least for the time being, has become a viable alternative on a cost per mile basis; so...I started running it in my 2015 Flex Fuel 4.3 V6. There is allot to learn and allot to get use to. </span>
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<p>
	<span style="font-size:16px;">Usually this fuel gets discussed on the basis of it's stellar octane value and it's ability to enhance performance. But I think the discussion can go further such as the effect it has on the motors oiling system. The 90+ octane crowd can make an even stronger case for cost effective use. Is there more? </span>
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<p>
	<span style="font-size:16px;">I asked a trusted friend for advice on the naming of this topic and while I loved the name, "<strong><span style="background-color:rgb(255,255,255);color:rgb(53,60,65);">CLEAN BURN FUELS</span></strong><span style="background-color:rgb(255,255,255);color:rgb(53,60,65);">" I've been here long enough to know what rabbit holes not to go down and this looked like one of those. Only from the standpoint that many clean fuels such as hydrogen and propane are logistical nightmares. That considered, I wanted <s>to</s> keep <s>it</s> in the arena of a fuel we have access to with many vehicles 'turn key' ready and more minimally so to make ready. I also wanted to keep it practical and shy away from the abstract/theoretical rabbit hole afore mentioned.  </span></span>
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<p>
	<span style="font-size:16px;"><span style="background-color:rgb(255,255,255);color:rgb(53,60,65);">In a separate post to follow I'd like to tackle the elephant in the room. Fuel consumption. </span></span>
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<p>
	<span style="font-size:16px;"><span style="background-color:rgb(255,255,255);color:rgb(53,60,65);">In the mean time, put on those thinking caps. </span></span>
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]]></description><guid isPermaLink="false">257850</guid><pubDate>Thu, 30 Jun 2022 20:13:27 +0000</pubDate></item><item><title>Castrol Edge VS Amsoil OE</title><link>https://www.gm-trucks.com/forums/topic/253323-castrol-edge-vs-amsoil-oe/</link><description><![CDATA[<p>
	I'm no chemical engineer so I would like some input on these oils. I'm considering switching from Castrol Edge to Amsoil OE for our 19 Santa FE. It takes 5W20. Is the cost difference worth it? I just want a better grade oil than Castrol Edge. Don't want to go full 100% synthetic like Red Line. Can't justify the cost because I will still do 3 K OCI's with Amsoil OE.
</p>

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<p>
	I'm thinking of switching looking for a better all around oil with better wear protection and cold start protection. Because we live in a colder climate in the mountains of Colorado and our trips to town are short drives I was thinking of upgrading this cars oil. Our morning temps have been in the 20's and 30's and it will be below zero in the dead of winter with highs in the 10's -  20's. Looking for better wear protection because we pull grades everywhere we go.
</p>

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<p>
	I think Amsoil OE would be an upgrade over Castrol Edge but not sure how much of an upgrade. What's your opinions?
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]]></description><guid isPermaLink="false">253323</guid><pubDate>Thu, 21 Oct 2021 14:10:49 +0000</pubDate></item><item><title>Engine Oil Funnel/Adapter Kits</title><link>https://www.gm-trucks.com/forums/topic/272684-engine-oil-funneladapter-kits/</link><description><![CDATA[<p>
	I had bought a 2025 model HD with the L8T gas engine and found that any normal funnel I had or could buy didn't begin to work with that slanted angle of the fill port in the valve cover. While I assume that topic has come up on this forum, searches I tried came up with nothing for remedies/ideas so hopefully I am not repeating the same topic over again. Searching around online I came across various funnel kits that have adapters to go into the oil filler port as well as some have an elbow adapter to contend with the poorly designed fill port on the L8T gas engine. Being in Canada its harder to source the vast options there seem to be in the states so I ordered a kit made by Lisle through a local supplier and its model number is 19912.  I have not used it yet to pour oil through so that is an unknown yet but did fit it up to the trucks fill port with the correct adapter ( the adapter is black and says GM/FORD ) and used the supplied elbow to get the correct angle of the funnel and then slipped the funnel into place. It appears as though it should work good, it brings the top of the funnel to just above that coolant line that runs across the engine bay. The funnel says its made in the USA and has a top cover as well as a bottom cover so it can be closed up and stored away and in theory not have to be cleaned out from fresh oil residue each time, throwing the unit into a clean plastic bag will help that out too.
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<p>
	<a href="https://www.lislecorp.com/lubrication-and-tire-products/19912-multi-application-oil-funnel-set-14-pc" rel="external nofollow">https://www.lislecorp.com/lubrication-and-tire-products/19912-multi-application-oil-funnel-set-14-pc</a>
</p>

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</p>

<p>
	So ironically I accidentally came across a cheap alternative that Princess Auto had on a surplus clearance sale ( I bought it April 22, 2025 ) and I will post the link but no doubt it will go dead after the sale is over and it took them quite a while in the store to actually find it as it was stuffed away on a shelf where they put random clearance items, it was no where near the isle with the funnels. Its made in Taiwan and has the brand name Powerbuilt  on it and while it does not have the same quality as the Lisle tool unit, its a cheap alternative at the moment with it being on sale for 20.00 as the Lisle kit is many times that price. It also has the elbow adapter and I fit it up with its GM/Ford adapter and it sits up probably a couple of inches higher than the Lisle unit which is fine and it has a lid of sorts and a cap for the bottom outlet as well. It happens to be built with a course screen in the bottom of the funnel which could be ok if something was accidentally dropped into the funnel such as the foil seal to a bottle. I'll just keep the unit and pack it in the truck if I am on a trip, will make adding oil even possible.
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<p>
	<a href="https://www.princessauto.com/en/17-pc-oil-fill-set-with-adapters/product/PA0009311622" rel="external nofollow">https://www.princessauto.com/en/17-pc-oil-fill-set-with-adapters/product/PA0009311622</a>
</p>
]]></description><guid isPermaLink="false">272684</guid><pubDate>Wed, 23 Apr 2025 18:46:24 +0000</pubDate></item><item><title>2025 GMC Sierra Elevation</title><link>https://www.gm-trucks.com/forums/topic/272509-2025-gmc-sierra-elevation/</link><description><![CDATA[<p>
	First time modifying a truck could use some help. Would a bilstein 5100 adjustable shocks 2.5 inch look good on this truck on front and back? Also what size tires can i put on this truck ? Look forward to hearing back from someone who can help me. 
</p>
]]></description><guid isPermaLink="false">272509</guid><pubDate>Wed, 09 Apr 2025 18:11:19 +0000</pubDate></item><item><title>What is oil additive CMOC ?</title><link>https://www.gm-trucks.com/forums/topic/271066-what-is-oil-additive-cmoc/</link><description><![CDATA[<p>
	<a class="ipsAttachLink ipsAttachLink_image" href="https://www.gm-trucks.com/forums/uploads/monthly_2025_02/IMG_9570.jpeg.cb3f71e5474e1b0680ac72bcbc90e889.jpeg" data-fileid="180966" data-fileext="jpeg" rel=""><img class="ipsImage ipsImage_thumbnailed" data-fileid="180966" data-ratio="133.21" width="563" alt="IMG_9570.thumb.jpeg.739d2607fa53049e57e2fd687f1a7dc8.jpeg" data-src="https://www.gm-trucks.com/forums/uploads/monthly_2025_02/IMG_9570.thumb.jpeg.739d2607fa53049e57e2fd687f1a7dc8.jpeg" src="https://www.gm-trucks.com/forums/applications/core/interface/js/spacer.png" /></a>
</p>
]]></description><guid isPermaLink="false">271066</guid><pubDate>Mon, 17 Feb 2025 17:14:53 +0000</pubDate></item><item><title>2011 Sierra: New grille, headlights and foglights</title><link>https://www.gm-trucks.com/forums/topic/270706-2011-sierra-new-grille-headlights-and-foglights/</link><description><![CDATA[<p>
	Looking for opinions between the different grilles, headlights and foglight combinations i have below. First headlight is clear and paired with stock denali grille with red logo. Second headlight is smoked and paired with 2500 grille with black logo.<a class="ipsAttachLink ipsAttachLink_image" data-fileext="jpg" data-fileid="180491" href="https://www.gm-trucks.com/forums/uploads/monthly_2025_01/20250119_162526.jpg.9fe7bfa7f9574d6db53891dc58d1fca9.jpg" rel=""><img alt="20250119_162526.thumb.jpg.a0c3cc07c6c67b2042c0c20b927dcb37.jpg" class="ipsImage ipsImage_thumbnailed" data-fileid="180491" data-ratio="133.21" style="height:auto;" width="563" data-src="https://www.gm-trucks.com/forums/uploads/monthly_2025_01/20250119_162526.thumb.jpg.a0c3cc07c6c67b2042c0c20b927dcb37.jpg" src="https://www.gm-trucks.com/forums/applications/core/interface/js/spacer.png" /></a><a class="ipsAttachLink ipsAttachLink_image" data-fileext="jpg" data-fileid="180492" href="https://www.gm-trucks.com/forums/uploads/monthly_2025_01/20250119_162518.jpg.5121515017457163c10465152bec0661.jpg" rel=""><img alt="20250119_162518.thumb.jpg.8ba2c1bf687aa0875f0ccd7b593bee5f.jpg" class="ipsImage ipsImage_thumbnailed" data-fileid="180492" data-ratio="133.21" style="height:auto;" width="563" data-src="https://www.gm-trucks.com/forums/uploads/monthly_2025_01/20250119_162518.thumb.jpg.8ba2c1bf687aa0875f0ccd7b593bee5f.jpg" src="https://www.gm-trucks.com/forums/applications/core/interface/js/spacer.png" /></a>
</p>

<p>
	<a class="ipsAttachLink ipsAttachLink_image" href="https://www.gm-trucks.com/forums/uploads/monthly_2025_01/20250120_130016.jpg.6238caa3fdd520aeeb58f9c502caf039.jpg" data-fileid="180487" data-fileext="jpg" rel=""><img alt="20250120_130016.jpg" class="ipsImage ipsImage_thumbnailed" data-fileid="180487" data-ratio="75.07" style="height:auto;" width="750" data-src="https://www.gm-trucks.com/forums/uploads/monthly_2025_01/20250120_130016.thumb.jpg.327b38ce1328c3bdcd16b245d067785c.jpg" src="https://www.gm-trucks.com/forums/applications/core/interface/js/spacer.png" /></a>
</p>

<p>
	<a class="ipsAttachLink ipsAttachLink_image" href="https://www.gm-trucks.com/forums/uploads/monthly_2025_01/20250103_163044.jpg.749b52fb7c2ae05f98270ffb2e83ceaf.jpg" data-fileid="180489" data-fileext="jpg" rel=""><img alt="20250103_163044.jpg" class="ipsImage ipsImage_thumbnailed" data-fileid="180489" data-ratio="133.21" style="height:auto;" width="563" data-src="https://www.gm-trucks.com/forums/uploads/monthly_2025_01/20250103_163044.thumb.jpg.eefdab58ad14374041086eb5cc2be460.jpg" src="https://www.gm-trucks.com/forums/applications/core/interface/js/spacer.png" /></a>
</p>

<p>
	<a class="ipsAttachLink ipsAttachLink_image" href="https://www.gm-trucks.com/forums/uploads/monthly_2025_01/20250120_133408.jpg.0671df409a36b5bce98e95d704d5801f.jpg" data-fileid="180490" data-fileext="jpg" rel=""><img alt="20250120_133408.jpg" class="ipsImage ipsImage_thumbnailed" data-fileid="180490" data-ratio="75.07" style="height:auto;" width="750" data-src="https://www.gm-trucks.com/forums/uploads/monthly_2025_01/20250120_133408.thumb.jpg.43e16bb56fa65e669b92f53adc1ecf77.jpg" src="https://www.gm-trucks.com/forums/applications/core/interface/js/spacer.png" /></a>
</p>
]]></description><guid isPermaLink="false">270706</guid><pubDate>Mon, 20 Jan 2025 20:17:06 +0000</pubDate></item><item><title>Paint Matching my 2019 Sierra 1500 Bumpers</title><link>https://www.gm-trucks.com/forums/topic/269287-paint-matching-my-2019-sierra-1500-bumpers/</link><description><![CDATA[<p>
	Hello, Im looking to paint match my front and rear bumpers from the chrome to my body color and was wondering if someone has done it swell and what it cost them? just trying to get an idea.
</p>
]]></description><guid isPermaLink="false">269287</guid><pubDate>Sat, 23 Nov 2024 11:35:32 +0000</pubDate></item><item><title><![CDATA[Sludge, Varnish, Soot & Ash]]></title><link>https://www.gm-trucks.com/forums/topic/253503-sludge-varnish-soot-ash/</link><description><![CDATA[<p>
	<a href="https://www.swri.org/sites/default/files/sequence-vg-test.pdf" rel="external nofollow">https://www.swri.org/sites/default/files/sequence-vg-test.pdf</a>
</p>

<p>
	 
</p>

<p>
	This PDF is a brief explanation of the ASTM Sequence VG Engine Test. 
</p>

<p>
	 
</p>

<p>
	Motor oils with then SAE SL/SM/SN/SN+ must past this test to get the certification. This test run 216 HOURS. Keep that in mind. 
</p>

<p>
	 
</p>

<p>
	Also note that this test was meant to simulate 'low temperature operations" aka 'normal' service. Over heat it and all bets are off. 
</p>

<p>
	 
</p>

<p>
	Time for the punch line. HOURS. The oil is not required to meet any of these standards past 216 HOURS in service. 
</p>

<p>
	 
</p>

<p>
	Guess what your hour meter is good for? <img src="https://cdn.jsdelivr.net/gh/twitter/twemoji@14.0.2/assets/72x72/1f609.png" class="ipsEmoji" alt="😉"> 
</p>

<p>
	 
</p>

<p>
	As you can see this test is a bit more complicated than the simple 'oil inlet screen' result AMSOIL focuses on alone. 
</p>

<p>
	 
</p>

<p>
	Peppers life time miles/hours over 150,000 miles is a hair over 42 mph and at the maximum of 216 hours this has a mileage cap on it of 9,216 miles. I change at 5K. 
</p>

<p>
	 
</p>

<p>
	According to Syn-Lube the industry average miles/hours is 33 mph or 7,128 miles. Does that look familiar to you? Pretty standard 7,500 OCI by OLM these days. Regardless of oil capacity. The link below will show in pictures what an oil passing this test looks like on the inside: 
</p>

<p>
	 
</p>

<p>
	<a href="http://www.synlube.com/API_SA_2005.htm" rel="external nofollow">http://www.synlube.com/API_SA_2005.htm</a>
</p>

<p>
	 
</p>

<p>
	Question is.....are you AVERAGE? That is, does your speed AVERAGE 32 mph or more? Do you tow, pull, haul...let it idle for hours and YES those hours count. 
</p>

<p>
	Second question is for you who like to do extended changes based on UAO what test are you reading that quantifies how clean the MOTOR is? Not the same thing as how clean the oil is. 
</p>
]]></description><guid isPermaLink="false">253503</guid><pubDate>Fri, 29 Oct 2021 21:57:25 +0000</pubDate></item><item><title>0W-20 Dexos1</title><link>https://www.gm-trucks.com/forums/topic/268506-0w-20-dexos1/</link><description><![CDATA[<p>
	I’d like your feedback on using Valvoline Extended Protection or Pennzoil Platinum in a newer 5.3 GMC truck engine. I’ve read a number of positive in-depth reviews of both. They both seem to have an impressive amount of additives as confirmed by Blackstone Lab reports. Both also seem to be well stocked and available at my local store.<br />
	Any good or bad experiences with one vs the other in the current 5.3s? I’m particularly interested any reports of excess oil consumption or lifter noise. <br />
	I understand that any brand of Dexos1 will work but with the number V8 issues GM’s had I’d like to hear firsthand from other truck owners.  
</p>
]]></description><guid isPermaLink="false">268506</guid><pubDate>Mon, 23 Sep 2024 00:12:51 +0000</pubDate></item><item><title>Estolide's in PCMO</title><link>https://www.gm-trucks.com/forums/topic/259719-estolides-in-pcmo/</link><description><![CDATA[<p style="text-align:center;">
	 
</p>

<p style="text-align:center;">
	<strong><span style="font-size:20px;">Estolide's</span></strong>
</p>

<p style="text-align:center;">
	 
</p>

<p style="text-align:center;">
	<img alt="Image" data-ratio="46.40" style="height:auto;" width="750" data-src="https://pbs.twimg.com/media/FKBt9goWUAERlsX?format=jpg&amp;name=medium" src="https://www.gm-trucks.com/forums/applications/core/interface/js/spacer.png" />
</p>

<p style="text-align:center;">
	 
</p>

<p style="text-align:center;">
	<a href="https://books.google.com/books?id=80jpDwAAQBAJ&amp;pg=PA479&amp;lpg=PA479&amp;dq=estolide+solvency&amp;source=bl&amp;ots=tUpPw_Z-eT&amp;sig=ACfU3U2GuX5vlUeSaxjav3sgAhs7wsc85Q&amp;hl=en&amp;sa=X&amp;ved=2ahUKEwj_5OKN_dv5AhUTjIkEHfO3ArwQ6AF6BAgiEAM#v=onepage&amp;q=estolide%20solvency&amp;f=false" rel="external nofollow">https://books.google.com/books?id=80jpDwAAQBAJ&amp;pg=PA479&amp;lpg=PA479&amp;dq=estolide+solvency&amp;source=bl&amp;ots=tUpPw_Z-eT&amp;sig=ACfU3U2GuX5vlUeSaxjav3sgAhs7wsc85Q&amp;hl=en&amp;sa=X&amp;ved=2ahUKEwj_5OKN_dv5AhUTjIkEHfO3ArwQ6AF6BAgiEAM#v=onepage&amp;q=estolide solvency&amp;f=false</a>
</p>
]]></description><guid isPermaLink="false">259719</guid><pubDate>Tue, 23 Aug 2022 03:10:52 +0000</pubDate></item><item><title>Brake Fluid and testing for brake fluid SAVANT LABS</title><link>https://www.gm-trucks.com/forums/topic/267824-brake-fluid-and-testing-for-brake-fluid-savant-labs/</link><description><![CDATA[<h1 style="background-color:#ffffff;color:#202020;font-size:24px;padding:0px;text-align:left;">
	<span style="font-size:20px;"><strong><span><span style="color:#000080;">Testing Critical Properties of Brake Fluids</span></span></strong></span>
</h1>

<p>
	<img align="right" data-ratio="100.00" height="200" style="background-color:#ffffff;border:0px;color:#202020;font-size:14px;text-align:left;" width="300" alt="63a74acc-58d6-c11b-d1ee-e1346171760c.jpeg" data-src="https://ci3.googleusercontent.com/meips/ADKq_NZ-R1HzK5q9rpcygreHt9GpynscQCRq8N2eUDozkEzb1x0zquY7giBpQ1G7nOahUII1bEJ5zK91A8lYCUPor7vw98ROmuTIYhqfCgO_tBievRbKYXFeHanLCv0aQyAkj8MqrQ-OzPMgG4bQ0pmV-8V0pvurpsZlKcceNOpyFCez=s0-d-e1-ft#https://mcusercontent.com/37000ee5152c0ba46d099f2d8/_compresseds/63a74acc-58d6-c11b-d1ee-e1346171760c.jpeg" src="https://www.gm-trucks.com/forums/applications/core/interface/js/spacer.png" /><span style="background-color:#ffffff;color:#202020;font-size:14px;text-align:left;">Brake fluids are unique among hydraulic fluids because they are considered safety-critical vehicle equipment by the National Highway Traffic Safety Administration (NHTSA). Their primary function is to transfer braking force from the pedal to the wheels while protecting brake system components. Savant Labs conducts comprehensive tests on brake fluids to ensure they maintain appropriate viscosity across various temperatures, remain compatible with different rubber materials used in brake systems, and do not damage metal components. Key tests include kinematic viscosity measurement, compatibility checks, and assessments of fluid stability under chemical and temperature stressors.</span><br style="background-color:#ffffff;color:#202020;font-size:14px;text-align:left;" />
	<br style="background-color:#ffffff;color:#202020;font-size:14px;text-align:left;" />
	<span style="background-color:#ffffff;color:#202020;font-size:14px;text-align:left;">Incompressibility is another crucial property of brake fluids, as it ensures the effective transfer of force within the braking system. To prevent the formation of compressible gas pockets, brake fluids must have high boiling points and avoid air absorption. The Equilibrium Reflux Boiling Point (ERBP) tests measure the fluid's boiling point under both dry and wet conditions. Given these rigorous testing protocols, Savant Labs can build a testing package to meet your needs for a variety of applications.</span><br style="background-color:#ffffff;color:#202020;font-size:14px;text-align:left;" />
	<span style="background-color:#ffffff;color:#202020;font-size:14px;text-align:left;"> </span>
</p>

<h1 style="background-color:#ffffff;color:#202020;font-size:24px;padding:0px;text-align:left;">
	<span style="font-size:18px;"><strong>Brake Fluid Classification</strong></span>
</h1>

<p>
	<span style="background-color:#ffffff;color:#202020;font-size:14px;text-align:left;">Brake fluids fit into classific</span><span style="background-color:#ffffff;color:#202020;font-size:18px;text-align:left;"><strong><span><span style="color:#000080;"><img align="right" data-ratio="100.00" height="166" style="border:0px;" width="250" alt="0ae6115b-6830-57ed-77ed-feb64a754839.jpeg" data-src="https://ci3.googleusercontent.com/meips/ADKq_Narsa2bFlNAN_FWadjzGynem0Al57QaJQCJW3VRgPbBtaPnXnlNMugNnAN32Xu40-adT-lC2qrgDQbLmmg8RSlqYu7P9p16Rs3NcakwcjWNFLKwUbFJ95CBre5yM5nxkhQcxZ88ygGYT8hJ4pTDDTfY2eAh9hDhT5EOXhGGo_z4=s0-d-e1-ft#https://mcusercontent.com/37000ee5152c0ba46d099f2d8/_compresseds/0ae6115b-6830-57ed-77ed-feb64a754839.jpeg" src="https://www.gm-trucks.com/forums/applications/core/interface/js/spacer.png" /></span></span></strong></span><span style="background-color:#ffffff;color:#202020;font-size:14px;text-align:left;">ations depending on their chemical composition, viscosity, and boiling point. The Department of Transportation specifies DOT 3, DOT 4, DOT 5, and DOT 5.1 in FMVSS 116. SAE specifications J1703, J1704, J1705, and ISO Class 3, 4, 5.1, and 6 mostly align with the DOT classifications with a few minor differences. Even though the Department of Transportation does not designate classes DOT 4+ or SUPER DOT 4, manufacturers often apply these designations to fluids meeting the additional requirements of ISO Class 6. Table 1 shows the relationship between these classifications.</span><br style="background-color:#ffffff;color:#202020;font-size:14px;text-align:left;" />
	<br style="background-color:#ffffff;color:#202020;font-size:14px;text-align:left;" />
	<span style="background-color:#ffffff;color:#202020;font-size:14px;text-align:left;">Table 1. Comparison of classification specifications [1, 2, 3, 4].</span><br style="background-color:#ffffff;color:#202020;font-size:14px;text-align:left;" />
	<img data-ratio="100.00" height="544" style="background-color:#ffffff;border:0px;color:#202020;font-size:14px;text-align:left;" width="650" alt="902f1e3f-c7e0-d798-3ae6-4e9af21a8a33.jpg" data-src="https://ci3.googleusercontent.com/meips/ADKq_NbMe3DGNAYUAxAkCf1vk8DTjKMAAzAen96A8QTXA8GaErY2J5TdZ3aV2EBdSAn4aOGQejsNmUsU5s16R_MzkcrBXaMsAghSTcpoTe1-Ot6w5fEZK6gyPPKiH2DgMTHmbHCjVv0swpulrUH10Pkl95CZpWjTdz3X7oU=s0-d-e1-ft#https://mcusercontent.com/37000ee5152c0ba46d099f2d8/images/902f1e3f-c7e0-d798-3ae6-4e9af21a8a33.jpg" src="https://www.gm-trucks.com/forums/applications/core/interface/js/spacer.png" /><br style="background-color:#ffffff;color:#202020;font-size:14px;text-align:left;" />
	<br style="background-color:#ffffff;color:#202020;font-size:14px;text-align:left;" />
	<span style="background-color:#ffffff;color:#202020;font-size:14px;text-align:left;">The compatibility tests are almost identical across all DOT classes. Of course, because silicone fluid does not mix with water, tests for DOT 5 SBBF sometimes have different requirements. When testing to DOT 3, 4, or 5.1 specifications, the technician must mix water into the fluid. For DOT 5 SBBF, the technician must instead humidify the fluid. In some cases, such as for chemical stability and pH, there is no requirement for silicon-based fluids. Table 2 shows the tests and requirements for component compatibility in FMVSS 116.</span><br style="background-color:#ffffff;color:#202020;font-size:14px;text-align:left;" />
	<br style="background-color:#ffffff;color:#202020;font-size:14px;text-align:left;" />
	<span style="background-color:#ffffff;color:#202020;font-size:14px;text-align:left;">Table 2. Component compatibility test requirements [1].</span><br style="background-color:#ffffff;color:#202020;font-size:14px;text-align:left;" />
	<img data-ratio="100.00" height="813" style="background-color:#ffffff;border:0px;color:#202020;font-size:14px;text-align:left;" width="650" alt="5dc57d73-2f9c-2fb4-a8c0-d9ea4ff43a96.jpg" data-src="https://ci3.googleusercontent.com/meips/ADKq_NYHv0Oa5TnwSJisgjgxmjD3ROFI4hLfgzp2Op33MPqwBVUM3-ZXgmxY8RNqwn905m1c72LTDs1fv0Lusa_q5qrFADfn6PIJmnjeXIeH9OarqYO2SYsxpKIGj-Iq1xBxsr5N8lr9GL5QZyn6l2JadLX_en4LGnbocZM=s0-d-e1-ft#https://mcusercontent.com/37000ee5152c0ba46d099f2d8/images/5dc57d73-2f9c-2fb4-a8c0-d9ea4ff43a96.jpg" src="https://www.gm-trucks.com/forums/applications/core/interface/js/spacer.png" /><br style="background-color:#ffffff;color:#202020;font-size:14px;text-align:left;" />
	<br style="background-color:#ffffff;color:#202020;font-size:14px;text-align:left;" />
	<span style="background-color:#ffffff;color:#202020;font-size:14px;text-align:left;">There are a few subtle differences between DOT and SAE limits for the stability and compatibility tests, so a fluid meeting the specifications for one classification may not necessarily meet the specifications for the comparable classification. Therefore, the actual test result is critical for understanding if a fluid meets both specifications. While the tests are nearly identical, SAE specifications call out test methods according to ASTM or DIN designations, and the FMVSS describes the test procedures and refers to SAE or ASTM standards only for materials, equipment, or calibration procedures.</span><br style="background-color:#ffffff;color:#202020;font-size:14px;text-align:left;" />
	<br style="background-color:#ffffff;color:#202020;font-size:14px;text-align:left;" />
	<span style="background-color:#ffffff;color:#202020;font-size:14px;text-align:left;">The most significant difference between the SAE and FMVSS specifications is in testing for damage to mechanical equipment from repeated motion. The FMVSS uses a simulated brake system with referee standard braking cylinders. In contrast, the SAE specifications use an SRV tribometer, which measures friction and wear under oscillating motion.</span><br style="background-color:#ffffff;color:#202020;font-size:14px;text-align:left;" />
	<br style="background-color:#ffffff;color:#202020;font-size:14px;text-align:left;" />
	<span style="background-color:#ffffff;color:#202020;font-size:18px;text-align:left;"><strong>Brake Fluid Specification Compliance</strong></span><br style="background-color:#ffffff;color:#202020;font-size:14px;text-align:left;" />
	<img align="right" data-ratio="50.00" height="197" style="background-color:#ffffff;border:0px;color:#202020;font-size:14px;text-align:left;" width="350" alt="b5557577-2ead-cc4a-bc76-ef0e5f14ebc7.jpg" data-src="https://ci3.googleusercontent.com/meips/ADKq_NYNC2hWlrmcFaS4xE-bzmXouNzDx4Fc5Ab9L1W2tALGE_xXhb7sRjuiVt0ShZfqyLs1kOxfe575Hh4-Zmfvij0rDwmuhO1WpE96TyeN-JRkJ0LvE7fSOQg3i-CIe7UsDT1Fh3MdWOn0CFDswoSmhBhspKkN8R-1zxQ=s0-d-e1-ft#https://mcusercontent.com/37000ee5152c0ba46d099f2d8/images/b5557577-2ead-cc4a-bc76-ef0e5f14ebc7.jpg" src="https://www.gm-trucks.com/forums/applications/core/interface/js/spacer.png" /><span style="background-color:#ffffff;color:#202020;font-size:14px;text-align:left;">In the US, manufacturers and packagers must self-certify that their brake fluids meet FMVSS-116 specifications. Manufacturers must conduct adequate testing to ensure compliance with DOT classification and provide certification to packagers, who must, in turn, ensure the fluid remains uncontaminated and complies with labeling requirements [5]. Both ISO and SAE classifications follow a similar self-certification process [6]. The National Highway Traffic Safety Administration (NHTSA) enforces these standards by randomly testing products. If a sample fails the FMVSS-116 test procedure, manufacturers may be requested to recall the product, and legal action can ensue if they do not comply. Consumers can also report non-compliant products to the NHTSA for investigation [5].</span><br style="background-color:#ffffff;color:#202020;font-size:14px;text-align:left;" />
	<br style="background-color:#ffffff;color:#202020;font-size:14px;text-align:left;" />
	<span style="background-color:#ffffff;color:#202020;font-size:14px;text-align:left;">Savant Labs offers<span> </span></span><a href="https://savantlab.us4.list-manage.com/track/click?u=37000ee5152c0ba46d099f2d8&amp;id=3a06641a79&amp;e=d083323111" style="background-color:#ffffff;color:#007c89;font-size:14px;text-align:left;" rel="external nofollow">brake fluid testing</a><span style="background-color:#ffffff;color:#202020;font-size:14px;text-align:left;"><span> </span>to the specifications of SAE J1703, SAE J1704, and FMVSS-116, providing manufacturers with confidence in their product certifications and offering spot checks for packagers. Testing is crucial as some fluids may fail to meet the required standards due to manufacturing variability or contamination. Savant Labs ensures all processes are correctly followed, and equipment is functioning properly during testing. Companies must closely monitor their brake fluids to maintain compliance and avoid costly recalls.</span><br style="background-color:#ffffff;color:#202020;font-size:14px;text-align:left;" />
	<br style="background-color:#ffffff;color:#202020;font-size:14px;text-align:left;" />
	<span style="background-color:#ffffff;color:#202020;font-size:14px;text-align:left;">A complete list of<span> </span></span><a href="https://savantlab.us4.list-manage.com/track/click?u=37000ee5152c0ba46d099f2d8&amp;id=c031904d24&amp;e=d083323111" style="background-color:#ffffff;color:#007c89;font-size:14px;text-align:left;" rel="external nofollow">brake fluid testing</a><span style="background-color:#ffffff;color:#202020;font-size:14px;text-align:left;"><span> </span>provided by Savant Labs is available.  Contact Savant Labs to<span> </span></span><a href="mailto:savant@savantgroup.com?subject=OTH%20Q2%20-%20Brake%20Fluid%20Testing%20%26%20More%20-%20Request%20a%20Quote" style="background-color:#ffffff;color:#007c89;font-size:14px;text-align:left;" rel="">request a quote</a><span style="background-color:#ffffff;color:#202020;font-size:14px;text-align:left;">.</span><br style="background-color:#ffffff;color:#202020;font-size:14px;text-align:left;" />
	<br style="background-color:#ffffff;color:#202020;font-size:14px;text-align:left;" />
	<a href="https://savantlab.us4.list-manage.com/track/click?u=37000ee5152c0ba46d099f2d8&amp;id=fd7bf51be7&amp;e=d083323111" style="background-color:#ffffff;color:#007c89;font-size:14px;text-align:left;" rel="external nofollow"><img align="left" data-ratio="34.52" height="34" style="border:0px;" width="100" alt="4347798f-51ed-40bf-9b3d-9eb4e290570a.jpg" data-src="https://ci3.googleusercontent.com/meips/ADKq_NZ1uDgav3Juh5pyoUOt3XrHbDB5q94L6RmwkDDJ5Go-ISsX2U3xrh0rIjZWMr1vwnXE_Z8F_Qbm_kldeAfEhEFaaiv7Ef92RRqOlJ8fTqGrpVEJgcNWNViJaqihrHTjoJSRmDOdpZVrTkCVrJQnzY4APAmxRGNyaC0=s0-d-e1-ft#https://mcusercontent.com/37000ee5152c0ba46d099f2d8/images/4347798f-51ed-40bf-9b3d-9eb4e290570a.jpg" src="https://www.gm-trucks.com/forums/applications/core/interface/js/spacer.png" /></a><br style="background-color:#ffffff;color:#202020;font-size:14px;text-align:left;" />
	<br style="background-color:#ffffff;color:#202020;font-size:14px;text-align:left;" />
	<br style="background-color:#ffffff;color:#202020;font-size:14px;text-align:left;" />
	<span style="background-color:#ffffff;color:#202020;font-size:11px;text-align:left;">[1] FMVSS 49 CFR 571.116 (10/1/2023)<span> </span><a href="https://savantlab.us4.list-manage.com/track/click?u=37000ee5152c0ba46d099f2d8&amp;id=51721117fb&amp;e=d083323111" style="color:#007c89;" rel="external nofollow">https://www.govinfo.gov/app/details/CFR-2023-title49-vol6/CFR-2023-title49-vol6-sec5 71-16</a>. Accessed, May 5, 2024.<br />
	[2] SAE J1703<sup>TM</sup><span> </span>MAR2024 Motor Vehicle Brake Fluid.<br />
	[3] SAE J1704<sup><span> </span>TM</sup><span> </span>MAR2024 Motor Vehicle Brake Fluid Based Upon Glycols, Glycol Ethers, and the Corresponding Borates.<br />
	[4] Remmen Brakes. (2019, January 22).<span> </span><em>Brake Fluid: What you Need to Know [Part 2] – Standards.<span> </span></em>Accessed May 5, 2024.<span> </span><a href="https://savantlab.us4.list-manage.com/track/click?u=37000ee5152c0ba46d099f2d8&amp;id=07d89cb65f&amp;e=d083323111" style="color:#007c89;" rel="external nofollow">https://www.remmenbrakes.com/brake-fluid-standards/</a><br />
	[5] Office of Vehicle Safety Compliance, NHTSA,<span> </span><em>OVSC Mission</em>, March 18, 2013. <span> </span><a href="https://savantlab.us4.list-manage.com/track/click?u=37000ee5152c0ba46d099f2d8&amp;id=1d82e84fc1&amp;e=d083323111" style="color:#007c89;" rel="external nofollow">https://www.nhtsa.gov/sites/nhtsa.gov/files/ovsc_mission.pdf</a>. Accessed May 5, 2024.<br />
	[6] J. Light, SAE International, personal communication December 18, 2023</span><br style="background-color:#ffffff;color:#202020;font-size:14px;text-align:left;" />
	<span style="background-color:#ffffff;color:#202020;font-size:14px;text-align:left;"> </span>
</p>
]]></description><guid isPermaLink="false">267824</guid><pubDate>Mon, 29 Jul 2024 21:53:58 +0000</pubDate></item><item><title>Rear Diff Fluid for Quadrasteer</title><link>https://www.gm-trucks.com/forums/topic/267823-rear-diff-fluid-for-quadrasteer/</link><description><![CDATA[<p>
	I’m looking for rear diff fluid for my 02 Silverado 1500 Quadrasteer. I ordered the ACDelco Dexron LS 75W-90 that is listed in the owners manual through Amazon and the order never shipped. I’d like to avoid ordering anything from a third party seller so I was wondering what my best alternative would be. I’ve seen a lot of people recommending amsoil but it’s not sold through anywhere other than them and I would prefer to get it from a store like AutoZone instead of waiting for an online order again. Does Valvoline or Mobil1 have a good alternative?
</p>
]]></description><guid isPermaLink="false">267823</guid><pubDate>Mon, 29 Jul 2024 21:03:30 +0000</pubDate></item><item><title>What are you using to clean those new big Silverado screens?</title><link>https://www.gm-trucks.com/forums/topic/266971-what-are-you-using-to-clean-those-new-big-silverado-screens/</link><description><![CDATA[<p>
	What are good interior cleaning options that are safe for the big screen in the Silverado?
</p>
]]></description><guid isPermaLink="false">266971</guid><pubDate>Thu, 02 May 2024 18:57:49 +0000</pubDate></item><item><title>PF66 oil filter shortage</title><link>https://www.gm-trucks.com/forums/topic/252135-pf66-oil-filter-shortage/</link><description><![CDATA[<p>
	Here is some good information straight from GM.
</p>

<p>
	 
</p>

<p style="font-family:'calibre italic';font-size:15px;">
	<b>Reference Number: GCUS-9-11766</b>
</p>

<p>
	 
</p>

<div>
	PF66 (GM #55495105) Oil Filter Shortage and Replacement Parts Effective 8/20/2021
</div>

<div>
	<p>
		 
	</p>

	<p>
		<span>Due to increase in demand in the past 6 months, the PF66 oil filter (GM# 55495105) is currently backordered. </span>
	</p>

	<p>
		<span> </span>
	</p>

	<p>
		<span>In the immediate interim, GM Engineering has recommended the <span><strong>ACDelco UPF66R</strong></span> as the preferred approved filter. </span>
	</p>

	<p>
		 
	</p>

	<p>
		<span>While not equivalent with the OE filter, considering the potential impact on GM vehicle owner satisfaction, we are allowing the usage of the following aftermarket filters for a limited time until a solution is identified. Additional bulletins will be distributed advising of sufficient PF66 availability and ending the competitive aftermarket filter warranty. We will also continue to warranty the engines (subject to remaining warranty) that receive one of the following aftermarket filters:</span>
	</p>

	<p>
		 
	</p>

	<ul>
		<li>
			<span>Mighty – M9510</span>
		</li>
		<li>
			<span>Valvoline – VO202</span>
		</li>
		<li>
			<span>Parts Master – WL610351</span>
		</li>
		<li>
			<span>Luber-finer – PH10066</span>
		</li>
		<li>
			<span>Champ – PH10066</span>
		</li>
		<li>
			<span>Wix – WL10351</span>
		</li>
		<li>
			<span>NapaGold – 100351</span>
		</li>
		<li>
			<span>PurolatorTech – TL11241</span>
		</li>
		<li>
			<span>Purolator – L11424</span>
		</li>
	</ul>

	<p>
		 
	</p>

	<p>
		<span><span><strong>Effective Date</strong></span><br />
		<br />
		8/20/2021<span><strong> </strong></span><br />
		<br />
		<span><strong>Additional information</strong></span><br />
		<br />
		An application guide for the PF66 oil filter has been attached. </span>
	</p>

	<p>
		<br />
		<span><a href="https://na01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fdealer.autopartners.net%2Fportal%2Fuscontent%2Fheadlines%2FPublishingImages%2FSitePages%2FViewAll%2FPF66_Buyers_Guide.xls&amp;data=04%7C01%7C%7C6ee7a13c42724f51e85e08d9642c539a%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C637650963811098518%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C1000&amp;sdata=EfWXxhkUpZm1rfM8%2Bqq9SxHZujIZB%2FIf8b%2FWzPzjd9s%3D&amp;reserved=0" rel="external nofollow" title="Protected by Outlook: https://dealer.autopartners.net/portal/uscontent/headlines/PublishingImages/SitePages/ViewAll/PF66_Buyers_Guide.xls. Click or tap to follow the link.">PF66_Buyers_Guide.xls</a></span>
	</p>

	<p>
		<span> </span>
	</p>

	<p>
		This message link is only valid through the expiry date.<br />
		Expires:Aug 20, 2022 23:00 ET<br />
		<br />
		<br />
		 
	</p>
</div>
]]></description><guid isPermaLink="false">252135</guid><pubDate>Mon, 23 Aug 2021 14:03:32 +0000</pubDate></item><item><title>Hood cable ground issue</title><link>https://www.gm-trucks.com/forums/topic/265855-hood-cable-ground-issue/</link><description><![CDATA[<div style="background-color:#ffffff;color:#353c41;font-size:14px;">
	<p>
		I was finishing my oil change today and I noticed getting in that it said my hood was open which I thought was odd because I closed it. Opening the hood I found the ground strap was ripped off from the connection on the firewall to the hood, now my turn signals don't work, fog lights, high beams and even my dome light switch. Is this also a ground for some pieces of the interior? My cluster and radio works fine just doesn't shut off when the truck is off.
	</p>
</div>

<div style="background-color:#ffffff;border-top:1px solid;font-size:13px;">
	<div>
		<div style="font-size:12px;">
			 
		</div>
	</div>

	<p style="vertical-align:middle;">
		<i style="font-size:inherit;"></i>
	</p>
</div>
]]></description><guid isPermaLink="false">265855</guid><pubDate>Thu, 18 Jan 2024 04:21:26 +0000</pubDate></item><item><title>Preventative Maintenace for Retractable steps?</title><link>https://www.gm-trucks.com/forums/topic/265545-preventative-maintenace-for-retractable-steps/</link><description><![CDATA[<p>
	Just got a new Denali with the Multi-pro steps, bunch of snow this week, going to clean the truck up nice this week.  Already thinking of how to clean &amp; lubricate these retractable steps to keep them from malfunctioning in the future.
</p>

<p>
	 
</p>

<p>
	Any suggestions?  Obviously keep them clean and clear of road salt/mud/sand...  what about lubricating?  Silicone spray?  WD-40?  Grease?
</p>

<p>
	 
</p>

<p>
	When these things fail, what is the cause?  Electrical connections?  Actuators?  Frozen pivots?
</p>

<p>
	 
</p>

<p>
	Thanks
</p>
]]></description><guid isPermaLink="false">265545</guid><pubDate>Thu, 21 Dec 2023 12:57:24 +0000</pubDate></item><item><title>HD bumper sagging</title><link>https://www.gm-trucks.com/forums/topic/265247-hd-bumper-sagging/</link><description><![CDATA[<p>
	I recently did my 2011-14 HD conversion on my 2009 single cab. The bumper sags so I bought the bumper brackets to fix the sag. I just have not seen a video or might not understand how to install them. Any help?
</p>

<p><a href="https://www.gm-trucks.com/forums/uploads/monthly_2023_11/IMG_5567.jpeg.ad8ea6b9e13dd13641cd6ec3a2941411.jpeg" class="ipsAttachLink ipsAttachLink_image" ><img data-fileid="173275" src="https://www.gm-trucks.com/forums/applications/core/interface/js/spacer.png" data-src="https://www.gm-trucks.com/forums/uploads/monthly_2023_11/IMG_5567.thumb.jpeg.1fdd3a7606025048d774112f65ee9857.jpeg" data-ratio="177.73" width="422" class="ipsImage ipsImage_thumbnailed" alt="IMG_5567.jpeg"></a></p>]]></description><guid isPermaLink="false">265247</guid><pubDate>Sun, 26 Nov 2023 05:25:40 +0000</pubDate></item><item><title>Torco Oil</title><link>https://www.gm-trucks.com/forums/topic/264973-torco-oil/</link><description><![CDATA[<p style="text-align:center;">
	<u><span style="font-size:20px;"><strong>SR-5R</strong></span></u>
</p>

<p>
	 
</p>

<p>
	This is listed as a "Racing Oil" but is suitable for street. It is pricey coming in at $21.95 per liter (1.056 quarts)
</p>

<p>
	 
</p>

<p>
	Don't let that lower-than-average TBN put you off. There is a synergy between PAO and AN's that gives a higher oxidation initiation temperature than either has alone. It will take a while to deplete its acid package. 
</p>

<p>
	 
</p>

<p>
	I would expect the oxidation number to be lower than Red Line but the Aniline point to be lower as well making it a good polar solvent with great dispersant ability.
</p>

<p>
	 
</p>

<p>
	The Esters enhance lubricity and film strength. 
</p>

<p>
	 
</p>

<p style="text-align:center;">
	<a class="ipsAttachLink ipsAttachLink_image" data-fileext="jpeg" data-fileid="172903" href="https://www.gm-trucks.com/forums/uploads/monthly_2023_10/image.jpeg.dc053de742f88217fbfcb19e39fe08ea.jpeg" rel=""><img alt="image.thumb.jpeg.3463a57021b0a04214d036fb64966ca4.jpeg" class="ipsImage ipsImage_thumbnailed" data-fileid="172903" data-ratio="91.20" style="height:auto;" width="750" data-src="https://www.gm-trucks.com/forums/uploads/monthly_2023_10/image.thumb.jpeg.3463a57021b0a04214d036fb64966ca4.jpeg" src="https://www.gm-trucks.com/forums/applications/core/interface/js/spacer.png" /></a>
</p>
]]></description><guid isPermaLink="false">264973</guid><pubDate>Fri, 27 Oct 2023 01:00:06 +0000</pubDate></item></channel></rss>
