First mileage test result.
The first mileage test results are in. A quick review of what was done to the truck. Cometic head gaskets half the thickness of Fel-Pro and with full o-rings around each cylinder, not combining int...
Forum Discussion
Surprised your mpg's are that low. I have a 2WD 99 F350 supercab with V10. Drove it to Medford and got 13mpg's unloaded. I drive the speed limit. Was surprised I got that good because it only gets 10 around town. Maybe it's the 4x4 that hurts your mpg's. (just a thought)
the 5.4 is whats hurting him.. the 5.4 (stock) has to work real hard to move that sail down the road. the 4x4 doesnt actualy use that much gase when disconected in thoes trucks, not like back in the 60's and 70's in comparison your V10 is hardly working at the speed limit compared to what the 5.4 would me, and like mu old 99 7.3 diesel it got close to 18mpg with my camper if I drove nice but it was far from stock.. my new 6.7 gets 19's with the camper on. and it is a 4x4 crewcab long box beast haha
