GM now saying to use 0w40 in 21-24 6.2L

[That John dude]

MOD NOTE:
Two threads with same topic have been merged as of 4-25-25 ...
Guy - please check before you post duplicate topics



In the L87 engines GM will be replacing your 0w20 oil with 0w40.

 

[4WD]

Javier was (already) on this like a bass on a June bug

 

[SC Maintenance]

Thicker wins again.

 

[Jimmy_Russells]

So in other words there is a defect in some connecting rods and cranks and the solution is to use thicker oil. Yeah ok

 

[pbm]

So in other words there is a defect in some connecting rods and cranks and the solution is to use thicker oil. Yeah ok

Exactly my thoughts. Another reason I won't be buying another GM (or any 'domestic') anytime soon.

 

[cptbarkey]

Huh, this is quite the news.

 

[scoot]

So in other words there is a defect in some connecting rods and cranks and the solution is to use thicker oil. Yeah ok

Exactly, maybe it will make it through warranty, GM fingers crossed

 

[4WD]

Exactly my thoughts. Another reason I won't be buying another GM (or any 'domestic') anytime soon.

What are you buying anytime soon?

 

[That John dude]

Javier was (already) on this like a bass on a June bug

Haha I posted it as soon as I seen it

 

[zfasts03]

Wow, shocked to see that move by GM.

Maybe I should step up to a 0w or 5w-30 in my L83 of the ‘16 Suburban, you know, just to be on the side of caution for the sake of longevity. 0w-40 may be more than needed for my vehicle usage.

Actually I may use HPL PPPCMO or NoVII 5w-30 in all. One oil to stock!

 

[That John dude]

Wow, shocked to see that move by GM.

Maybe I should step up to a 0w or 5w-30 in my L83 of the ‘16 Suburban, you know, just to be on the side of caution for the sake of longevity. 0w-40 may be more than needed for my vehicle usage.

Actually I may use HPL PPPCMO or NoVII 5w-30 in all. One oil to stock!

I have a 14 6.2, and already planned to switch to 5w30 after my amsoil 0w20 run. It’ll be on that till it won’t go anymore.

 

[edyvw]

Using 0W20 was always: can we get away with it and get some CAFE credit. In this case: No.

 

[zfasts03]

Inspection checks for PO016, crankshaft and camshaft should be rotating in sync, but the P0016 code suggests they are out of sync.

I thought the issue was a rod bearing problem?

 

[scoot]

The oil passages will be too small for 0w40

 

[NETWizz]

It is strange if they make too much a of a difference

 

[Slick3914]

So in other words there is a defect in some connecting rods and cranks and the solution is to use thicker oil. Yeah ok

Yup, same thing that Ram did with the Ecodiesel.

 

[BornSlippy]

When warranty claims > CAFE credits.

 

[CapitalTruck]

Found on reddit today:

 

[CapitalTruck]

Waaaay past due

 

[RhondaHonda]

I don’t see anything in the news about this being an actual recall.