Jump to content

Oil question

Npd15

By Npd15
in 6.6L Gas V8 (L8T)

 Share

Recommended Posts

Another JR Senior Enthusiast

Another JR

Posted
Posted
1 hour ago, lineman1234 said:

My L8T sounds the same, cold and warmed up, with new fresh oil as when just before its dumped with the recommended around 7,500 or when the dash gaugy thingy sais to change. Im very happy with my choice of my 2024 3500 gasser. Darn motor just puuurrrrrs. 

 

Almost time to change oil on it, 3,000ish miles of it are towing a 10,000lbs tall 5ver with added wind drag of front AC unit. Not a noticeable drop of oil used. I would have to go look, but i think its at 25,000 or 26,000ish miles now. 

 

The motor hasnt died yet using a reusable oil filter, and the catch can still catches some kind of crap. 

 

I think its a great motor and transmission. For my needs. 

 

I too am totally pleased with my gas truck’s drive train.  I have a 2021 with the six speed. It’s smooth, quiet, and powerful. The oil level drops maybe 8-12 oz between my 3750 mile oil changes. My interval is partly driven by my low mileage per year right now. I have just over 12k on the truck. 
 

I think one of the reasons the oil experts here have recommended shorter oil change intervals than 7500 is that the additives that are intended to help prevent long-term intake valve area carbon build up lose some of their effectiveness prior to 7500 miles.  Even if you don’t have lubrication concerns at your interval, you might want to consider that. I have no direct experience or expertise in this area myself - I’m just repeating what I’ve read. 

  • Like 2
lineman1234 Enthusiast

lineman1234

Posted
Posted
3 hours ago, Another JR said:

I too am totally pleased with my gas truck’s drive train.  I have a 2021 with the six speed. It’s smooth, quiet, and powerful. The oil level drops maybe 8-12 oz between my 3750 mile oil changes. My interval is partly driven by my low mileage per year right now. I have just over 12k on the truck. 
 

I think one of the reasons the oil experts here have recommended shorter oil change intervals than 7500 is that the additives that are intended to help prevent long-term intake valve area carbon build up lose some of their effectiveness prior to 7500 miles.  Even if you don’t have lubrication concerns at your interval, you might want to consider that. I have no direct experience or expertise in this area myself - I’m just repeating what I’ve read. 

My 2015 ram 2500 with the 6.7 cummins diesel i had for 8 years and almost 170,000 miles. I did the recomended 15,000 oil changes, and the thing sounded like new, never used any oil. 

Grumpy Bear Senior Enthusiast

Grumpy Bear

Posted
Posted
8 hours ago, lineman1234 said:

My 2015 ram 2500 with the 6.7 cummins diesel i had for 8 years and almost 170,000 miles. I did the recomended 15,000 oil changes, and the thing sounded like new, never used any oil. 

 

So...not a 6.6 gasser. Not 5W30 gas engine oil. 🤔 Yea, sure, I see the comparison. 😒

  • Like 2
  • Thanks 1
Grumpy Bear Senior Enthusiast

Grumpy Bear

Posted
Posted
11 hours ago, Another JR said:

I think one of the reasons the oil experts here have recommended shorter oil change intervals than 7500 is that the additives that are intended to help prevent long-term intake valve area carbon build up lose some of their effectiveness prior to 7500 miles.  Even if you don’t have lubrication concerns at your interval, you might want to consider that. I have no direct experience or expertise in this area myself - I’m just repeating what I’ve read.

 

Yes, lower AW and AO add packages, Yes more top ring FUEL DILUTION. Nearly double. Thank you GDI. Continued lower "in service' viscosity. Yes reversion to lower base oil choices. They make money and they make expensive trucks. You get to  pay for both. 

 

The Dexos1Gen2 & 3 oils are not just at the bottom of the viscosity range. Under shear (towing) they are 20 weights when new and W16's used. Will it take it? For a while. How long is "a while"? How long is a rope. 

KARNUT Senior Enthusiast

KARNUT

Posted
Posted

In the carburetor days we change oil more often for the same reason as today gas getting into oil. We had a period of time where that wasn’t a problem. It really doesn’t matter how good the oil is if gas is involved. The short answer is more frequent oil changes. You can’t really say engines are better today without saying who’s. I strongly advised my brother in law against buying a 2013 Tahoe. Probably the worst year for cylinder deactivation. As he approaches 150K on 5-6K oil changes it keeps motoring along. He waits for a sale of motor oil at auto zone and puts that in. 300K miles is nothing for him. 

Grumpy Bear Senior Enthusiast

Grumpy Bear

Posted
Posted
3 hours ago, KARNUT said:

In the carburetor days we change oil more often for the same reason as today gas getting into oil. We had a period of time where that wasn’t a problem. It really doesn’t matter how good the oil is if gas is involved. The short answer is more frequent oil changes. You can’t really say engines are better today without saying who’s. I strongly advised my brother in law against buying a 2013 Tahoe. Probably the worst year for cylinder deactivation. As he approaches 150K on 5-6K oil changes it keeps motoring along. He waits for a sale of motor oil at auto zone and puts that in. 300K miles is nothing for him. 

 

Holley, Autolite, Motorcraft. All ran clean if you had half a clue and few did. I FIXED allot of these after the clueless got their hands on them. And I never had a customer that wasn't a expert. It's why they were in my shop. :crackup:

 

In our county we had three guys the did carb work. We stayed out of each others sandbox. We had a Rochester guy and a Carter/Stromberg guy. Across the river we had a Euro guy. Weber, SU etc. 

 

Oh boy are your right! 

  • Like 2
lineman1234 Enthusiast

lineman1234

Posted
Posted
11 hours ago, Grumpy Bear said:

 

So...not a 6.6 gasser. Not 5W30 gas engine oil. 🤔 Yea, sure, I see the comparison. 😒

Dont be grumpy..........................

  • Haha 2
Randal Scott Enthusiast

Randal Scott

Posted
Posted (edited)

The K&N filter is not a reusable filter. For the nut, it's on the bottom. So to make it easier to install/remove. Now being disabled and retired, I don't get out much. Specially now in the winter. In a year and a half, it's just have 2000 miles on this oil change. When I was working, 6000 to 8000 miles a year. So I would change oil at 5000 miles. With being disabled these past years, the pickup only got around a 1000 miles for a couple years. And that dash oil life counter would say needs an oil change in less than 6 months. And it was just sitting in the garage. And so far shows no signs of oil usage. 

Edited by Randal Scott
Grumpy Bear Senior Enthusiast

Grumpy Bear

Posted
Posted
4 hours ago, Randal Scott said:

The K&N filter is not a reusable filter. For the nut, it's on the bottom. So to make it easier to install/remove. Now being disabled and retired, I don't get out much. Specially now in the winter. In a year and a half, it's just have 2000 miles on this oil change. When I was working, 6000 to 8000 miles a year. So I would change oil at 5000 miles. With being disabled these past years, the pickup only got around a 1000 miles for a couple years. And that dash oil life counter would say needs an oil change in less than 6 months. And it was just sitting in the garage. And so far shows no signs of oil usage. 

 

Wife has a Verano that gets used like that. 2014 with 19K on the clock. Will blacken oil quicker than one that sees 25K a year and gets changed every 5K. Oil isn't fond of the elements. I change is ever fall and spring. 

KARNUT Senior Enthusiast

KARNUT

Posted
Posted
56 minutes ago, Grumpy Bear said:

 

Wife has a Verano that gets used like that. 2014 with 19K on the clock. Will blacken oil quicker than one that sees 25K a year and gets changed every 5K. Oil isn't fond of the elements. I change is ever fall and spring. 

My wife’s Acura only gets driven by me. She can’t work a clutch much anymore. It rides rough, no sound deadening. It’s still fun in small doses. It gets out once a month. The last of our performance vehicles. We’ll probably never sell it. Reminds us of our crazy days. Once a year oil changes. I put 150 miles on it last year. It still smells new. I need to drive it more. I wish I’d kept a muscle car instead. She kept hers I didn’t. 

  • Like 1
  • Thanks 1
Randal Scott Enthusiast

Randal Scott

Posted
Posted (edited)

I also have a Honda Goldwing trike. I have not rode it for the last 2 plus years. Being laid up. It got 100 miles or so put on it in that time by my sister and niece. The last oil change was in the fall of 2021. If I can't ride it this year. I'm going to sell it. It's a 2013 with 23000 miles on it. 

Edited by Randal Scott
  • Like 1
lineman1234 Enthusiast

lineman1234

Posted
Posted
On 1/18/2025 at 9:25 AM, Another JR said:

I too am totally pleased with my gas truck’s drive train.  I have a 2021 with the six speed. It’s smooth, quiet, and powerful. The oil level drops maybe 8-12 oz between my 3750 mile oil changes. My interval is partly driven by my low mileage per year right now. I have just over 12k on the truck. 
 

I think one of the reasons the oil experts here have recommended shorter oil change intervals than 7500 is that the additives that are intended to help prevent long-term intake valve area carbon build up lose some of their effectiveness prior to 7500 miles.  Even if you don’t have lubrication concerns at your interval, you might want to consider that. I have no direct experience or expertise in this area myself - I’m just repeating what I’ve read. 

im often wrong, but it is my understanding there is no egr on the or my 2024 L8T 6.6 gasser. As well as i have proven with the non really needed catch can, but i still like to look inside to see what it cought/catches, as well, doesnt put any ccv gasses into the intake. So should only be clean air going into said intake only. 

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
 Share
Go to topic listing

  • Latest Articles

  • Posts

    • No1UKnow
      Transmission Woes :-(

      By No1UKnow · Posted

      I wonder as well, why they would send me a text message with links to these suggested procedures totalling over $10,000 without even the slightest hint of how they arrived at these being necessary.
    • Grumpy Bear
      OCI, not when but why?

      By Grumpy Bear · Posted

      https://precisionlubrication.com/articles/oil-filter-efficiency/     For them it is a problem of $$$$ and compliance. To cover both they have to lie from the heart.    Government wants low waste oil numbers so the bar needs to be very low on contamination to met that requirement.  Consumer wants cheap maintenance (perceived cost). Again requiring a low bar.  OEM wants high margins at a cost effective warranty rate and lots of repeat customers. More low bar.  Filter manufacture wants the same thing the OEM wants. See the pattern?   Consumers are fickle and also want perfection requiring a HIGH bar. Inconsistent with all of the above. Consumers can be, when the put their minds to it, inquisitive, love winning arguments which requires some useful information to be available to support them. And this is where it gets sticky and the lies begin.    Information needs a solid well grounded point of reference if we are to compare in a useful way. There is a standard for this.  ISO 4548-12. This standard sets the particle size at a specific Beta ratio and darn few are faithful to its intent.    If they don't state the test method they change the particle size or the Beta ratio to hit a perceived favorable standard. They obscure the information in a way as to prevent direct comparisons leaving the consumer with one method. UOA's with an ISO 4406 test result. Pricey and not allot of labs willing to do the work. Lobby work happens everywhere, not just at the seat of government.       
    • diyer2
      OCI, not when but why?

      By diyer2 · Posted

      IF,IF,IF. If they cared about quality instead of profit and this applies to any company, what a concept. 
    • Christopher Miller
      2001 GMC Sierra - Banging feeling in steering wheel

      By Christopher Miller · Posted

      Good Morning Gents..hope everyone is enjoying a beautiful saturday morning. I have a 2001 GMC Sierra that I bought used in 2018. I am the 2nd owner and its a beautiful truck. Ive put about 60,000 miles on it and recently the front end has felt funny. Kind of loose when hitting bumps adn sometimes I actually feel a "bang" in the steering wheel. I took it to a local guy who said that everything was tight and he tightened the steering box. It didnt feel much better, so I had him replace the front shocks, which had noto been done since I bought it. It had the check enging light on so I took it into a local garage to fix that and check out the suspension. Everything is original and the rubber bushings that I can see look bad. They said everything was tight and there wasnt any play in the front end. Im concerned about the banging feeling in the wheel. Ive been driving this truck for 8 years, so I know how it usually feels and this is something new. Its a second vehicle, so I dont drive it all the time, but Im trying to use it more often. I live out in the country and some of the  roads are kind of rough and I alive on gravel roads. Anyone deal with anything like this before? 
    • KARNUT
      Joke Thread

      By KARNUT · Posted

      Yes of course. There’s no experience in the Trump organization in hiring contractors. it’s not like they’re experienced in that field.😆

  • GM-Trucks.com Clubs

  • Popular Contributors

×
×
  • Create New...