Jump to content

Recommended Posts

Posted
6 hours ago, Pryme said:

plenty of guys are not leaking oil but are using plenty. Transmission fluid can burn off too. 

I can't even remember the last time I have ever added ATF but of course I change my ATF every 30K miles. This is with my F150 with the 10R80 transmission with the tiny dipstick under the car.

 

If people are adding transmission fluid, they didn't check it properly(measured at proper temp) to begin with.

 

There is absolutely no way it burns off. If ATF is burning, there is something severely wrong.

  • Like 2
Posted
2 hours ago, bruceb58 said:

I can't even remember the last time I have ever added ATF but of course I change my ATF every 30K miles. This is with my F150 with the 10R80 transmission with the tiny dipstick under the car.

 

If people are adding transmission fluid, they didn't check it properly(measured at proper temp) to begin with.

 

There is absolutely no way it burns off. If ATF is burning, there is something severely wrong.

 

I think this comes from the days of vacuum modulators and mechanical governors. TH350/400/TH700R/Powerglide When a diaphragm leaked ATF got sucked into the intake manifold and thus burned off. 

  • Like 2
Posted
16 minutes ago, Grumpy Bear said:

 

I think this comes from the days of vacuum modulators and mechanical governors. TH350/400/TH700R/Powerglide When a diaphragm leaked ATF got sucked into the intake manifold and thus burned off. 

You are 100% correct sir grumpy.  Those vacuum modulators would fail and the engine would suck in the ATF.  Probably cleaned the hell out of it though....lol...maybe it wasn't a bad thing for a while...🤣

  • Haha 1
Posted
2 hours ago, Grumpy Bear said:

 

I think this comes from the days of vacuum modulators and mechanical governors. TH350/400/TH700R/Powerglide When a diaphragm leaked ATF got sucked into the intake manifold and thus burned off. 

Yep....I used to be a used car dealer working my way through college. Had an RX-7 that was smoking like crazy. Thought the rotor seals were bad...was just the modulator.

  • Like 1
Posted

I worked in a full service gas station in New Jersey. Along with filling the gas tank. You check oil, cleaning the windshield and sometimes put air in the tires. No one would say check the transmission fluid. One thing that was common back then was adding oil. Those were the days of 3 thousand mile oil changes. So a quart between oil changes wasn’t unusual. Of all the 60s and 70s cars I had back then. I can’t recall a transmission fluid problem. Even after installing B&M shift kits. I did lots of power braking in those days.

  • Like 1
Posted

Okay let’s say there is no need to ever check the fluid. For the guys who change it every 30-40k miles. Do you just take it in and pay to have it done? It’s going to be an ultra easy job with a mityvac through the dipstick tube. 

Posted
17 minutes ago, Pryme said:

Okay let’s say there is no need to ever check the fluid. For the guys who change it every 30-40k miles. Do you just take it in and pay to have it done? It’s going to be an ultra easy job with a mityvac through the dipstick tube. 

Only until the warranty runs out. If you don’t care about the warranty, then go for it. I used to go right to the exhaust shop, install a program, add cold air and change my fluids to Amsoil in the first week. When they started using synthetic from the factory I’d wait 5K miles on the engine. Some got super chargers the first winter, diesel’s got turned up. Once things got more technical and expensive we went to factory or dealer performance. Bought extended warranty and left them alone. I stayed with old stuff ( being retired) I like my old favorites. My brother drives a Shelby Super Snake truck. My nephew drives a Raptor. Our head shop Forman drives a TRX. I just drive theirs sometimes it’s cheaper. Maybe being older it seems the price to modify new stuff has gotten out of proportion if something fails. I never had a failure from modifying. I’ve had a couple of vehicles that needed unrelated warranty work. The service guy would only ask to remove the program I installed. That was all. Those days are gone. 

Posted
55 minutes ago, Pryme said:

Okay let’s say there is no need to ever check the fluid. For the guys who change it every 30-40k miles. Do you just take it in and pay to have it done? It’s going to be an ultra easy job with a mityvac through the dipstick tube. 

 

I took it in the first time to a private shop and had a PLM pan installed with a drain. Went straight to Red Line D6 and I flipped the pill in the drive. Never saw the dealer again except for recall work. Adding Valvomax. Now easier than a vacuum pump. 

Posted (edited)

Length story about modifications done while under warranty. And a good lesson on the importance of viscosity. 😉 

 

2005 I buy a new Harley TC88 dresser. These motors hold about 4 quarts of 20W50 and have a spin on filter. Gerotor oil pumps and the timing chains use a resin shoe to hold tension. Not equipped with a cooler or thermometer and they run HOT. These resin chain tension shoes are considered consumables and are routinely changed every 30-35K miles. No uncommon to replace the chain every or every other service. 

 

On the first oil change and observing oil tank temperatures over 250F I swapped the Harley oil for Red Line HP 20W50 car oil. On the next change I bought a cooler system for a Sportster which, unlike the kit for the TC88, filters the oil before cooling it. It's a sandwich plate. I also bought a second TC cooler, just the radiator. As the sandwich plate extends the filter toward the frame to the point it cannot be removed, I also bought a new factory filter mount. Cut the filter portion off in the bandsaw and machined the block side to make parallel and groove for "O" rings making a 3/8" spacer. Replaced the mounting bolts with longer studs moving the filter forward enough to clear the frame then mounted both coolers in series. Searched the WIX catalogue for a cheaper, larger filter with the same relief pressure and crossed that to a Purolator. Added a pint or so and much cheaper filter. Took it for a ride and now I had oil temperatures on a 100F day of 190F at 70 mph dropping it 60F! 

 

Third change I swapped the RLHP 20W50 for RLHP 10W40. Made blinds for the coolers and maintained an oil temperature of 185-200F for the next 45K miles. Yea, 10K past the service interval at which point the dealer is going nuts and telling me horror stories of guys have complete motors replaced due to the chains eating the shoe steel backing the sending that crap through the roller assemblies. He was sure the 10W40 non-motorcycle oil would be a killer. So, after a while I caved in and had them open the cam chest for service. As I did not want my pushrods cut and adjustable installed (Harley procedure) I had them remove the rocker boxes as well. 

 

My instructions were to measure EVERYTHING and replace ANYTHING not inside NEW spec plus install the new HD high volume pump and new hydraulic tensioner system that came out a few years later. My Shovelheads would be due for overhaul by this mark. 

 

Next day I get a frantic call from the service manager. "You need to come see this or you won't believe me." Cold sweat I hurry down to the shop. The entire shop is gathered around my bike. I squeeze through the human barrier to find my mechanic sitting on his stool having a cuppa with a big grin on his face. 

 

Not a single part of that motor was out of spec. Not even a visible wear track in the cam lobes. Not a hint of deposits. The shoes? About 10% used up! They would go 100K miles twice over. I had the new system installed anyway and buttoned up. The increased oil flow volume now has me running one cooler blind on everything but the hottest days in the desert. She runs ambient plus 90 degrees and whisper quiet. 

 

Known problem. I fixed the problem. Ignored the warranty implications. I got rewarded for fixing the problem. Not with just havening no warranty issues but by adding multiples to the engine's life. Still own that bike. 

 

AW and EP additives do NOT work on polymers and resins. Straight up viscosity result. 

10W40 at 190F is many times more vicious than 20W50 at 250F plus. 

Viscosity is a function of the oil's environment, not it's specification. 

Edited by Grumpy Bear
Posted (edited)
5 hours ago, Pryme said:

Okay let’s say there is no need to ever check the fluid. For the guys who change it every 30-40k miles. Do you just take it in and pay to have it done? It’s going to be an ultra easy job with a mityvac through the dipstick tube. 

On my F150, first change I drop the pan and change the filter, second one I suck it out and replace...next one pan drop and filter change.

 

When I get my 2024 GMC Denali that I just ordered, I will follow same procedure but I am going to replace with a new pan with a drain plug at the first change.

Edited by bruceb58
  • Like 2
Posted
8 hours ago, Pryme said:

Okay let’s say there is no need to ever check the fluid. For the guys who change it every 30-40k miles. Do you just take it in and pay to have it done? It’s going to be an ultra easy job with a mityvac through the dipstick tube. 

That's what I've decided to do.  I'm at 21k but will have the dealer change it, the transfer case and both diffs at 30k.  I want this on them, not me.

  • Like 1
  • 1 month later...
Posted

I'm one to change fluids way early on "break-in". May cause some debate, just my preference. 1st oil change today at 1K miles on my new 2024 L5P. And yes, the differential was lower than 0.4" below fill hole .....

I plan on changing trans fluid in the 10 speed early ... (Open to hearing who did ATF change the earliest).

 

I've got a 1992 C2500 TBI 350 that I immediately installed an aluminum trans pan and a cooler on when purchased. Changed ATF every 30 miles (max), sometimes used Wal-Mart brand ATF. At 200k+ miles the old girl shifts nice and smooth. Well worth being pro-active and lesson learned.

 

Soooo, here's my question, how do you add a dipstick to the new 10 speed trans?

Is there a pan out there that has a bung / dipstick?

Is there a retrofit offered that screws into the "sight" hole?

 

I've seen cast aluminum aftermarket pans with drain plugs and additional depth / fluid capacity for the 2023 model years. But again, unsure if retrofit to dipstick is on the market.

 

 

Thank you for any response.

 

Posted
6 hours ago, Ozark Dually said:

I'm one to change fluids way early on "break-in". May cause some debate, just my preference. 1st oil change today at 1K miles on my new 2024 L5P. And yes, the differential was lower than 0.4" below fill hole .....

I plan on changing trans fluid in the 10 speed early ... (Open to hearing who did ATF change the earliest).

 

I've got a 1992 C2500 TBI 350 that I immediately installed an aluminum trans pan and a cooler on when purchased. Changed ATF every 30 miles (max), sometimes used Wal-Mart brand ATF. At 200k+ miles the old girl shifts nice and smooth. Well worth being pro-active and lesson learned.

 

Soooo, here's my question, how do you add a dipstick to the new 10 speed trans?

Is there a pan out there that has a bung / dipstick?

Is there a retrofit offered that screws into the "sight" hole?

 

I've seen cast aluminum aftermarket pans with drain plugs and additional depth / fluid capacity for the 2023 model years. But again, unsure if retrofit to dipstick is on the market.

 

 

Thank you for any response.

 

As far as I know there is no dipstick mod for the 10spd. 

Posted (edited)
18 hours ago, Ozark Dually said:

I'm one to change fluids way early on "break-in". May cause some debate, just my preference. 1st oil change today at 1K miles on my new 2024 L5P. And yes, the differential was lower than 0.4" below fill hole .....

I plan on changing trans fluid in the 10 speed early ... (Open to hearing who did ATF change the earliest).

 

I've got a 1992 C2500 TBI 350 that I immediately installed an aluminum trans pan and a cooler on when purchased. Changed ATF every 30 miles (max), sometimes used Wal-Mart brand ATF. At 200k+ miles the old girl shifts nice and smooth. Well worth being pro-active and lesson learned.

 

Soooo, here's my question, how do you add a dipstick to the new 10 speed trans?

Is there a pan out there that has a bung / dipstick?

Is there a retrofit offered that screws into the "sight" hole?

 

I've seen cast aluminum aftermarket pans with drain plugs and additional depth / fluid capacity for the 2023 model years. But again, unsure if retrofit to dipstick is on the market.

 

 

Thank you for any response.

 

Just get the pan that has the indicator hole. I think the OEM pan already has that but since I don't have my truck yet, I can't verify. On my first ATF change, I will be replacing the pan with one with a drain plug.

Edited by bruceb58
  • Like 1

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now

  • Latest Articles

  • Posts

    • Can it still be Assembled I?    Stribeck says that we need a certain amount of viscosity under conditions of load and velocity to prevent two surfaces of a know roughness from tearing each other asunder. And we have marketing trying to tell the masses that those two surfaced require less of that commodity due to more exact limits being placed on the same old clearances. We also know that there are limits to how hard something can before it becomes to brittle to be viable and to smooth to 'wet' the surface and that both of those conditions have been known and met since about the Second World War.    That viscosity value shook out at 10 centistokes at 212 F just under a hundred years ago.  Give this a look: [Anton Parr]     What is advertised is the Kinematic viscosity (mm2/s) or that which has been density adjusted but the value we are after is the dynamic viscosity (mPa.s) or true viscosity. You can see that this number is dependent on density thus base stock and temperature. You can also see that an SAE 30 doesn't reach that value in this example. However an SAE 30 that is at the upper end of the SAE 30 range; 12.5 cSt (mm2/s), might. 12.5 * .83 = 10.375 (mm2/s). If you could find an SAE 30 at the upper end these days.   Then there is the complication of viscosity modifiers or VII or VM, whatever you wish to call them. Polymers added to very thin base oils, perhaps 3 to 6 cP oils, that will meet the SAE *W30 spec at 'tested' shear rates and 100 C/212F  target temperature. So a polymer fortified base that is a fraction of the 10 cP requirement Stribeck insist upon.   This could be all well and good if those polymers didn't have two very problematic 'features'. They shear or loose viscosity both 1.) permanently and 2.) temporality. And they do both omitted in the advertised data with the distinct  purpose of deceiving the consumer of the actual operating state of the fluid. I've shown the example of Warren Oils COSTCO 10.91 cSt 5W30 formuation several times where the 100 C HTHS value is 6.9 cP!! That's the temporary shear down and with and SSI or shear stability index of 9.4 cSt. Note the intentional deception in using mixed units?    After a short while that 9.4 cSt oil has a viscosity corrected dynamic value of 7.8 cP. But as the SSI is still within the range of an SAE *W30 whose lower value is 9.3 cSt.    This allows them to continue to call this SAE 16 weight oil a 30 weight, the cake, and still meet the API requirements for fuel efficiency IMPROVEMENT mandated by the EPA. The eating of the cake. By the time you've worn out your motor doing the responsible thing by adhering to the warranty requirements, (the stick), you get deprived of the carrot, wear control. So sad, to bad.   So what can be done? Do I need actually say? [Anton Parr]       Even this must be monitored if the oil is on the low side and the VII an organic or you opt for a 0W40 with an even lighter base oil and more / higher MW VII. (Note the lower density of the 40 weight versus the SAE 30 mono-weight?)    There is another workaround. Temperature. An SAE *W30 run at a bulk temperature of between 180 and 195 F.    Being the belt and suspenders sort I am I do both. Run it cook and run it heavy.    In Part II I'll work the AW package. 
    • So, do I go elbow-deep on this thing or list it for sale and play dumb? Seems to "runs good."   I'm about $1200 away from having: -a rebuilt injector ($300) -a new cat ($250) -a new cat back exhaust (OE style) ($300) -a new AC compressor ($200) -AC refrigerant charge ($150)   In theory, this should rectify the obvious detracting issues from its value and operability. Cold AC with a non-squeaking AC pulley both sounds and feels good. An exhaust that isn't cut/hacked in 17 different places and doesn't vibrate on a crossmember would make it sound and feel less janky. A working cat would help the stink, and will save the earth, but *if and only if* the fuel system is working properly, which would also address the intermittent "rich" CEL.   Heard a good one... CEL for "Rich condition" means you haven't spent enough money on the truck lately, and it's letting you know.   Rebuilding the injector would seem to be the most important part. Replacing the cat would be secondary. I don't think mine is plugged or overly restricted, but it might be a little restricted? I have no good way to tell other than seat of the pants feel. I hate the smell.   The current theory is I have a rich idle problem: A bad fuel pressure regulator, or a leaking injector(s) being the highest probabilities. I already replaced the FPR but that doesn't mean its replacement isn't also bad. It was a new part from Dorman, but the packaging looked like it had been sitting on a shelf for 20 years.   This is the (single) upstream O2 sensor shown at idle. I'm getting a lot of "rich" it seems. Sometimes it stays high like that and doesn't drop down. That makes me think it's processing injector leaks or a partially stuck open injector.     Other times it looks like this. Nice oscillations between rich and lean, which is what I think it should be. Under load and at speed, the oscillations are nice and tight and uniform looking, high and low.     Fuel trims suggest the PCM is compensating pretty hard at idle to pull fuel out. But it's not enough to trip a CEL. Something about slowing to a stop: brake vaccum booster, EGR, or the EVAP purge is delayed, or there's pooled fuel in the intake again that's draining into a cylinder is enough to set the CEL. Of course, in two days of driving, it hasn't set. I was hoping to actually look at the freeze-frame data when it sets. IAT is high because it's idling on an 83 degree day here.  
    • Have considered installing a DC to DC charger in your camper to replace your isolator?  
    • Common failure.  You need to replace the fuel door housing.   The painted cover transfers over to the new housing.  To remove the old one there is 4 spots where you poke the plastic to release it.  
    • No such thing as regenerative braking on a pure ICE vehicle.     Regenerative braking is the re-capture of energy from electric motors and stores it in the battery pack.  So hybrids, PHEV and EVs have regenerative braking.     What you are seeing is the charging system changing modes is all.  Its likely entering charge mode for some sort of reason is all.  All of the charging modes will be listed below.   As for L10 vs D.  L10 turns off automatic grade braking.  L10 puts you in control of grade downshifts where in D it will automatically do it based on brake pedal position and other factors.  Otherwise L10 and D drive exactly the same aside from that one aspect.    Battery Sulfation Mode The BCM will enter this mode when the interpreted Generator output voltage is less than 13.2 V for 45 minutes. When this condition exists the BCM will enter Charge Mode for 2–3 minutes. The BCM will then determine which mode to enter depending on voltage requirements.   Charge Mode The BCM will enter Charge Mode when ever one of the following conditions are met:   Windshield wipers are ON for more than 3 s. Climate Control Voltage Boost Mode Request is true, as sensed by the HVAC control module via serial data. High speed cooling fan, rear defogger, and HVAC high speed blower operation can cause the BCM to enter the Charge Mode. The estimated battery temperature is less than 0°C (32°F). Battery State of Charge is less than 80%. Vehicle speed is greater than 145 km/h (90 mph) A current sensor malfunction exists. System voltage is determined to be below 12.56 V When any one of these conditions is met, the system will set targeted generator output voltage to a charging voltage between 13.9–15.5 V, depending on the battery state of charge and estimated battery temperature.   Fuel Economy Mode The BCM will enter Fuel Economy Mode when the estimated battery temperature is at least 0°C (32°F) but less than or equal to 80°C (176°F), the calculated battery current is less than 15 A and greater than −8 A, and the battery state-of-charge is greater than or equal to 80%. Its targeted generator output voltage is the open circuit voltage of the battery and can be between 12.5–13.1 V. When fuel economy mode is active, the generator is not charging, only maintaining open circuit battery voltage. The BCM will exit this mode and enter Charge Mode when any of the conditions described above are present.   Headlamp Mode The BCM will enter Headlamp Mode when ever the head lamps are ON (high or low beams). Voltage will be regulated between 13.9–14.5 V.   Start Up Mode When the engine is started the BCM sets a targeted generator output voltage of 14.5 V for 30 s.   Tow/Haul Mode (if applicable) Pressing the Tow/Haul Mode button located on the center stack, the vehicle system voltage is raised and the remote (non-vehicle) battery will be charged. Having the headlamps on will raise the system voltage and if the Tow/Haul button is applied it will not serve any purpose. The voltage is regulated between 13.9-14.5 V.      
  • GM-Trucks.com Clubs

  • Popular Contributors

×
×
  • Create New...