Oil consumption between changes

[JKeller]

The 6.2 generation 21+ engines have a problem with the rotation of the crankshaft and the destruction of the liners. Our mechanics believe that thicker oil, in particular 5w30.or 0w30, is to blame. Because the oil does not get where the manufacturer intends

I appreciate the information. I see snow in your profile picture and assume you are somewhere up north. I am down in Florida. My mechanic here believes many of the engine failures (in all makes and models) his shop sees these days are due to running 0w-20 oil in our hot Florida temperatures. Knock on wood I have 65k miles on my 6.2l and hope to more than double that.

 

[Marky Dissod]

My mechanic here believes many of the engine failures his shop sees these days
(in all makes and models) are due to running 0w20 oil in our hot Florida temperatures.

That net is being cast very wide, although there is something to it.
Look up the European motor oil spec for an engine that specs 5W20 in america, guess what you find:

5W30.

But 5W30's not going to save any L87s, even if European-built L87's spec 5W30 ...
because the L87s built here are being built with substandard parts.

 

[Vladimir2306]

I appreciate the information. I see snow in your profile picture and assume you are somewhere up north. I am down in Florida. My mechanic here believes many of the engine failures (in all makes and models) his shop sees these days are due to running 0w-20 oil in our hot Florida temperatures. Knock on wood I have 65k miles on my 6.2l and hope to more than double that.

I’m not so much in the north as in the East or West))) I’m from Russia)) But GM cars are also sold in the UAE. Where the climate is even hotter than Florida. And in the club of Russian-speaking owners of T1 generation cars there are guys from the UAE with Yukons 6.2. So in the United Arab Emirates they also pour 0W20 oil.

 

[Vladimir2306]

I’m not so much in the north as in the East or West))) I’m from Russia)) But GM cars are also sold in the UAE. Where the climate is even hotter than Florida. And in the club of Russian-speaking owners of T1 generation cars there are guys from the UAE with Yukons 6.2. So in the United Arab Emirates they also pour 0W20 oil.

I don’t know what the European 5W20 specification is, I use oil according to the Dexos 0w20 specification. And yes, we do not have European-made engines, we have American L87) I completely agree, the L87 has a number of defects and problems. And switching to 5w30 oil will not correct the situation. If the engine breaks down, it will most likely happen with any oil, even Sunflower oil)))) I just expressed one of my opinions. We are also starting to collect some funny statistics. In Russia we have two channels for sending GM cars.
These are cars from the USA and Arab. And some strange story happens, the Arab cars seem to be assembled on a different assembly line. They have a poorly painted frame that rusts immediately. They, right after each other, get the crankshaft turning and the bearings being destroyed. While the American ones drive without any problems. Perhaps this is subjective and there are simply more Arab cars. But the situation is strange.

 

[JKeller]

I appreciate the information. I will keep running the best oil I can find (Amsoil) and using the appropriate fuel for my 6.2l (at least 91 octane) and will hope that this engine gives me nearly 200k plus thousand miles and is still running fine when I sell it, which is what happened with my last 3 Tahoes.

 

[WalleyeMikeIII]

I appreciate the information. I will keep running the best oil I can find (Amsoil) and using the appropriate fuel for my 6.2l (at least 91 octane) and will hope that this engine gives me nearly 200k plus thousand miles and is still running fine when I sell it, which is what happened with my last 3 Tahoes.

We are all hoping the same; but there definitely more than a few cases of spun rod bearings out there on these things…maintaining well is a great start at extending the life…but if GM built your engine with bad parts, all bets are off

 

[JKeller]

We are all hoping the same; but there definitely more than a few cases of spun rod bearings out there on these things…maintaining well is a great start at extending the life…but if GM built your engine with bad parts, all bets are off

Fair point. Most of what I read involves relatively low mileage failures, so hopefully I am not one of the statistics. I remain optimistic but, of course, time will tell.