Quoting Rob P <fristpenny@xxxxxxxxxxx>:
> Ok, D^2 you don't like viscosity additives, I can understand that, but
> since
> the 5 is when cold and the 30 when hot why shouldn't they act the same
> in
> hot weather? Obviously that is ignoring any problem with the viscosity
> additives.
Yes, short term they would.
> I was told 5w30 was recommended for my 2.2, but the book says no so I'm
>
> sticking with 10-30, 10-40. I was going to put that 0W30 in my'cuda
> that
Nowadays, they often recommend oil grades good for fuel economy (and therefore
emissions) which may not always be best for long term operation, especially
when driven hard.
D^2