Finally drove a 6.4
I decided to take a 6.4L for a spin today and I was pretty impressed overall. It took a while for the nose to grow on me, but the interior is pretty sweet. While the 6.4L is a nice improvement over my '06 6.0L, I wasn't "blown-away" with itís performance. The one thing I really liked was the "light" steering effort. It's about time Ford got that right. According to my fleet sales connection, he is getting around 14/15 mpg on the highway, which is right around what I'm getting around town with my 6.0. According to him, the dealer's Ford rep. told him the mileage should get better once the truck gets over 10,000 miles. The rep. told him that Ford programs the 6.4L to run a little rich for the first 10,000 to help "break it in". After exceeding 10,000 miles, the program is adjusted by the computer to deliver better mileage, via using less fuel. I don't know if I believe all that though. Seems a bit of a stretch.
Anyways, maybe I'll look again next year when all the bugs are worked out.