Main Bearing Failure with 6.2L at 3,200 miles

[Srittle001]

You managed to get 47K miles on the engine before it spun a bearing. Care to share what oil weight/ brand and what oil change interval you were using before the old engine went south?
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Was changing oil every 5-5.5k miles at the dealer and not sure exactly what they were using.

 

[Bkihum]

What's crazy about this is, while the vast majority don't/won't/haven't had a problem yet, there is enough failures floating around to make you stop and think every day.... Am I driving one of these ticking bombs or not? And most people's outcomes won't be a 5-10 day fix.....

So same issue on my 2022 Yukon Denali 26000 miles, I thought I was good until heard the noise and lost power , coasted to the side and had it towed to dealer. Waiting for engine tear down for evaluation with engineers.

 

[Antonm]

Was changing oil every 5-5.5k miles at the dealer and not sure exactly what they were using.

The dealer would use the recommended 0w20 oil, which may be a contributing factor to the failures these engines are seeing.
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[tom3]

I don't like the idea of 0w20 oil either (slippery water) but with all the oil dependent tech in these motors what else can be used? But I suspect the failures on this series of motors is more due to block shift and casting materials.

 

[mikez71]

0w20!?

What'll be next?

 

[Antonm]

Chevrolet recommends/ specs 0w40 in the corvette 6.2.

Which yes there are differences in the corvette 6.2 compared to the truck engine but the rotating/ oil lubed parts are the same.

I’ve been running mobil 1 0w40 euro oil in mine and the blackstone oil labs reports are coming back good. I’m trying a few others ( and will do used oil analysis on them too) to figure out what oil I’ll go with long term, but I think it’s gonna be either Mobil 1 5w30 truck &suv or the 0w-40 super car Mobil 1 ( which is the only dexos approved 0w40 that I can find), or the 0W40 euro oil ( not dexos approved) that I’ve already ran with good test results.

 

[Antonm]

0w20!?

What'll be next?

Toyota already has a 0w8 out and is putting that in some of their cars.

Yes an 8 weight oil at operating temperature, makes the 0w20 slippery water crap GM specs for us look like actual oil by comparison.
…

 

[tom3]

And I used to run 15w40 Rotella with a can of STP on the old small blocks with a high volume pump. Never had a failure though.

 

[B-train]

0w20!?

What'll be next?

They are using 0w-16 I believe on some new Chrysler vehicles per a service advisor I know. Yikes!