carguy1701

I THINK the LT1/2 are built on a different line. LT4/5 were/are hand built at the PBC so they wouldn't be affected by this.

I did :< If the plant machines the blocks then somebody has been asleep at the switch for a while... This is starting to sound like the Hyundai/Kia 2.4/2.0T crank debacle. All caused by somebody apparently not doing their job...

Oof. Have you had a UOA done?

But it HAS been changed: part of the inspection, regardless of pass or fail, is to put an insert in the owner's manual stating to use 0W-40 oil in the 6.2L, as well as a new oil cap with 0W-40 on it. I'll also point out that (allegedly) the LT2 in the C8 shares bearings (down to the part number) with the L87, but the Vettes aren't being recalled, and that 0W-40 has been used in the LT1/2/4/5 since MY 2019 with no apparent issues (and we all know how vocal Corvette guys can be). I'm thinking this is a combination of supplier screwup and fuel mileage greed biting them in the arse. I have a hard time believing that 877k engines were manufactured with whatever this flaw is without someone on the assembly line noticing something was amiss...but then again stupider things have happened.