Re: oil ???
I should mention this is not Fernandez. This is a buddy of his fromwork.
I know that is what I was talking about. I use the GM Oil life monitor in my Saturn for my oil change intervals because as you and I said a lot of engineering went into it by a lot of guys that know what they are doing.
Same as figuring out suggested oil viscosity for a given engine.
All I was saying it just amuzes me sometimes that people stress so much over oil choice and oil change intervals when all that work and thought has already been done for us.
I see the same things over on redlineforums.com