Main Bearing Failure with 6.2L at 3,200 miles

Antonm said:

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?
...

Click to expand...

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

Stbentoak said:

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.....

Click to expand...

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.
Waiting on engine dealer says they are on back order. Dealer provided us with new GMC Hummer, hopefully we get an engine soon. 11/4 24

Srittle001 said:

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

Click to expand...

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

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.

0w20!?

What'll be next?

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.

mikez71 said:

0w20!?

What'll be next?

Click to expand...

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.


…

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.

mikez71 said:

0w20!?

What'll be next?

Click to expand...

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

Had this happen earlier this week. Dealer called to let me know Catastrophic Engine failure. Waiting on an engine from GM, not able to order any so they are checking daily. Has anyone had Lemon Law work for them after their states statute on days?