Just been going according to the manuals that came with my '95. Recommends 15-40 for summer and probably switch to I think it's 5-30 for winter. Probably wrong so I'll be double checking. Supertech is unfortunately what is on the shelves in my area. Not a lot of 15-40 castrol in my area otherwise I'd be using it. Probably order some for my next oil change through napa or something. |