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Oil question

Npd15

By Npd15
in 6.6L Gas V8 (L8T)

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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. 

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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. 😒

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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. 

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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. 

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