Jakebrake
Thread starter
Yeah, I am aware of the 2000 Cobra R oil recommendation. I thought I would look at the sample of 10W-30 I just took, and then look at the sample of this 15W-50/10W-30 blend and go from there. The Cobra R was limited production and I think that they are driven hard, or at least Ford expected them to be. Not enough numbers of the 2000 Cobra R cars for CAFE to be a consideration. But three years later with 10,000 Mach 1's in 2003/2004 I think CAFE is a biger factor. I am not bashing 5W-20, I am just experimenting a little with my own car and money to see where it takes me. I still am using 10W-30 in my F250 SD CC and Excursion, but they don't see revs in the 5,000 and above range.