1)Mobil 1 0w/40; 2)GC, 3)Redline 10w/30, 4)Castrol 5w/40 BC, 5)Valvoline Syn
I seriously doubt the engineers had anything to do with the decision to factory fill M1. M1, more than likely, paid at least some of those manufacturers to FF and put a nice little sticker on the oil cap.quote:
The point that I was trying to make is that the engineers who designed and built those engines decided, for whatever reason, to go with Mobil over ALL the other manufacturers combined.