Well this is what I have been thinking, using the ac delco pf44, and the mobile 1 5w30, this is for a 2004 chevy crewcab 1500 4x4, every thing you read says the ac delco is a great filter, and made by the same company as the mobile 1 oil filter?
Anyway, pep boys has buy 3 get 3 free! on mobile 1 oils!