Oil Consumption

riddler · May 28

1 hour ago, Chuck FB said:

I don't know if you were aware or maybe Newdude explained it, that the Valvoline Restore and Protect is not a Dexos licensed oil, however the new Mobil Advanced Clean is Dexos licensed but I don't know that its been out long enough to have a handle on how it compares to the Valvoline R&P.

I will say that one of the local Chev dealer advisors pissed me off when I asked about the 2 complementary oil changes since I haven't used them and he informs me that is a GM company deal and not the dealer as I thought I could pass them over to a friend so he could make use of them ... ok so that was a no and that is fine. However then he sees I haven't been bringing my truck in for oi changes there and jumps on that fact to tell me a story about bla bla bla customer that had an engine issue and was not covered on warranty because he didn't have dealer proof that he had been having the oil changed. A tactic used by certain personnel at dealers to scare the customer into NOT going anywhere else or doing ones own maintenance but to always bring it to the dealer to retain that warranty. I was also getting the calls from the dealer pushing the 300.00 oil change package that includes checking to make sure the battery is still under the hood and to rotate ones tires. Pushy sales and scare tactics go over like a lead balloon in my world.

If the 6.2 can use 0W-40 just fine as per that engine bearing failure theme, certainly the 6.6 should not have reason to complain and this one oil covers everything I am after as far as flow for cold weather here in western Canada to heavy towing if or when I do any of that in hot weather.

Having said all that, I know where your coming from with warranty and every person will have a comfort level when it comes to what they decide to do if they in fact are thinking of using an oil that isn't blessed by the GM gods !.

Thanks for the information. It does give one something to think about.

Grumpy Bear · May 28

12 hours ago, KARNUT said:

Has it used oil from new? How much is it using? I’ve had two vehicles use oil from new. Both a qt every 2500 miles. Never got worse. If you’re under warranty still. Bring it to their attention.

8 hours ago, riddler said:

since 20k I have 31k now. thanks

Think I read in this tread where you affirm no leaks and it's way to early for guide/seal issues so.....

Fist off, I don't know peanuts about the PCV system on this motor but @newdude does and a fouled system can cause consumption issues if it isn't working right and that number of miles it kind of checks that box. Perhaps he can speak to that. GM uses several vent system types; valved, baffled and orifice. They have procedures. I just don't know them.

If it passes muster then we are back to rings. Fouled? Possible. Stuck? Possible. Valvoline Restore and Protect 5W30, as@newdude mentioned will free them over time. I wouldn't worry about the warranty. It isn't using oil.

But you have to consider WHY any of this happened to not repeat it. That's another discussion.

newdude · May 28

13 hours ago, riddler said:

Of course I am changing the oil and filter well before manufacture recommends. Driving style doesn't matter. No modern engine should burn significant oil in between regular oil changes. I am going to try Valvoline next oil change as per recommended here. Thanks.

Driving style does indeed affect. A car/truck that is driven "grandma going to Sunday bingo" style its whole life doesn't look the same inside as one that gets put to the floor once a day. Ring seal and cleanliness on that bingo driver will be far worse than the other.

newdude · May 28

9 hours ago, Chuck FB said:

I don't know if you were aware or maybe Newdude explained it, that the Valvoline Restore and Protect is not a Dexos licensed oil, however the new Mobil Advanced Clean is Dexos licensed but I don't know that its been out long enough to have a handle on how it compares to the Valvoline R&P.

Your point being? People run all sorts of Amsoil flavors yet they aren't licensed either.

diyer2 · May 28

The wife starts her car and goes, no thought of warming up or easy driving on a cold engine.

My work truck was remote start, sat outside. In winter warmed up before moving it.

Never saw either one use a lot of oil until my truck got over 200k, not a lot of oil usage.

3k OCI's off the shelf oil.

Now our daily gets Amsoil OE. 5k OCI's. No oil use to very little.

riddler · May 28

1 hour ago, newdude said:

Driving style does indeed affect. A car/truck that is driven "grandma going to Sunday bingo" style its whole life doesn't look the same inside as one that gets put to the floor once a day. Ring seal and cleanliness on that bingo driver will be far worse than the other.

We can agree to disagree

riddler · May 28

56 minutes ago, diyer2 said:

The wife starts her car and goes, no thought of warming up or easy driving on a cold engine.

My work truck was remote start, sat outside. In winter warmed up before moving it.

Never saw either one use a lot of oil until my truck got over 200k, not a lot of oil usage.

3k OCI's off the shelf oil.

Now our daily gets Amsoil OE. 5k OCI's. No oil use to very little.

Awesome now thats how a modern engine should operate

newdude · May 28

36 minutes ago, riddler said:

We can agree to disagree

I'll take the hard evidence any day of the week.

Chuck FB · May 28

1 hour ago, newdude said:

Your point being? People run all sorts of Amsoil flavors yet they aren't licensed either.

My point was pointing out that the Valvoline Restore and Protect is not Dexos approved and if one was wanting to be 100% sure of proof for retaining the factory warranty, a Dexos licensed oil "should" guarantee no push back from GM corporate. Same theme for Amsoil or any other company that doesn't pay the GM licensing ransom. Being that your working at a GM dealer in the states, you would be able to voice if its even been an issue in regards to warranty coverage if using oils that are compatible with the engine, but just don't have the Dexos license.

As I said here in Canada its a very different attitude at both the dealer level and GM Canada corporate head office as to warranty coverage if using a non licensed oil, or even changing ones own oil if using Dexos licensed oil is a very touchy issue and one HAS to create records and show receipts of Dexos licensed oil. I've had those conversations with both the person who does all the warranty claims at my dealer as well as GM corporate and they will deny warranty at any excuse because of our lack of laws here to protect the consumer, certainly no Magnusson Moss act on this side of the border.

One of the GMC dealers in the area had been an Amsoil dealer for years but they got out of it, I've never talked to the staff in the know at that dealer as to why they did that so its only speculation that they would not have been able to use it in vehicles that are still covered by warranty. Before Dexos came out there was no issue due to licensing but that's all changed. There are certainly independent shops in the area that work on pickups that handle Amsoil but by then either the truck has no warranty or its being deleted and so the engine isn't going to have a warranty anyway.

Grumpy Bear · May 28

17 hours ago, riddler said:

Of course I am changing the oil and filter well before manufacture recommends. Driving style doesn't matter. No modern engine should burn significant oil in between regular oil changes. I am going to try Valvoline next oil change as per recommended here. Thanks.

3 hours ago, newdude said:

Driving style does indeed affect. A car/truck that is driven "grandma going to Sunday bingo" style its whole life doesn't look the same inside as one that gets put to the floor once a day. Ring seal and cleanliness on that bingo driver will be far worse than the other.

Two things can be true at the same time. "Most" people don't alter service according to their driving style, habits and environment. They look at a book and think the OEM has the goods on this and proceed. In that case @newdude is dead on. It matters a great deal.

IF however the owner makes sensible choices of fluids and fluid maintenance...then @riddler has a point.

If I had to make a blanket statement (and I hate those) it makes a difference. A huge difference. And the colder the climate the bigger the difference "FOR THE SAME SERVICE".

2 cents worth.

riddler · May 28

1 hour ago, Grumpy Bear said:

Two things can be true at the same time. "Most" people don't alter service according to their driving style, habits and environment. They look at a book and think the OEM has the goods on this and proceed. In that case @newdude is dead on. It matters a great deal.

IF however the owner makes sensible choices of fluids and fluid maintenance...then @riddler has a point.

If I had to make a blanket statement (and I hate those) it makes a difference. A huge difference. And the colder the climate the bigger the difference "FOR THE SAME SERVICE".

2 cents worth.

Bottom line GM manufactured an inferior engine, and now whatever your driving style doesnt matter! Fact!

Grumpy Bear · May 28

19 minutes ago, riddler said:

Bottom line GM manufactured an inferior engine, and now whatever your driving style doesnt matter! Fact!

I have the same DLH faced thin light tension rings and GDI system in Pepper. She's got 193K on her and uses no oil. I treat it for what it is, not what I wish it was and we get along just fine. I don't short hop her. I use a polar oil and I change it. I use UOA's to spot issues with the fuel system. I practice what I preach. It's the advice we've been giving.

Low tension rings are not a death sentence. They are a warning to treat it better than you had to in the past.

You came with your hat in your hand looking for help. People are trying. Don't bite that hand.

riddler · May 28

17 minutes ago, Grumpy Bear said:

I have the same DLH faced thin light tension rings and GDI system in Pepper. She's got 193K on her and uses no oil. I treat it for what it is, not what I wish it was and we get along just fine. I don't short hop her. I use a polar oil and I change it. I use UOA's to spot issues with the fuel system. I practice what I preach. It's the advice we've been giving.

Low tension rings are not a death sentence. They are a warning to treat it better than you had to in the past.

You came with your hat in your hand looking for help. People are trying. Don't bite that hand.

Haha! Give her the foot and I bet you wont see a difference. Doesnt matter driving style. Once an oil Burner always an oil burner. I did recieve suggestions, that I may pursue, however unrealistic jabber does not stick. Good day.

Another JR · May 28

10 hours ago, newdude said:

Driving style does indeed affect. A car/truck that is driven "grandma going to Sunday bingo" style its whole life doesn't look the same inside as one that gets put to the floor once a day. Ring seal and cleanliness on that bingo driver will be far worse than the other.

Also, I have noticed that prolonged high speed highway driving under some load (slide in camper wind resistance) seems to use a little more oil than general lower speed driving. This is for a 2021 with 19k miles that uses almost no oil between 3750 mile oil changes with Mobil One. It is based on my oil changes measurements after a 4000 mile Southwest parks trip this Spring.

riddler · May 29

16 minutes ago, Another JR said:

Also, I have noticed that prolonged high speed highway driving under some load (slide in camper wind resistance) seems to use a little more oil than general lower speed driving. This is for a 2021 with 19k miles that uses almost no oil between 3750 mile oil changes with Mobil One. It is based on my oil changes measurements after a 4000 mile Southwest parks trip this Spring.

Sounds to me like some piston rings might seat at different times depending on driving factors. If I get 200k out of mine I will be happy. Not excited about the oil consumption though. My ladt truck Ford got 217,000 miles with not one drop of oil consumption, at the time of trade in. Coyote 5.0