Quote:
Originally Posted by Gunkk
Thanks MLEE and Al. 
To get the answer let us ask ourselves: What fundamentally has changed with the design and material selection of the moving parts inside the LT1 and LT4 engines?
Maybe the low ash 0w40 oil just wasn't through R&D yet and it's just better at most things. It doesn't make the 5w30 bad or mean sticking with 5w30 will cause our cars to die a premature death... or does it?
But I think we already know the answer, and GM legal won't let Al confirm it. |
Tadge who is the ‘Vette chief engineer did say when ‘Vette owners asked about the new oil that it is backwards compatible and recommended to change to it for pre-2019 ‘Vette’s.