Originally Posted by
12ozd
Different truck setups are going to get different results.
(engines,trans,rears, etc.)
I find it very hard to believe the 04 f250 6.0 gets 24 mpg.
The other results are believeable.
My '06 is getting 20-22 mpg with no mods. It is up to how many hills you have to climb and how heavy your foot is. If I climb a lot of hills it goes down to about 18. I think it sucks that the 6.4 would get that bad of fuel mileage. You would hope that it was better than the 6.0, but who knows
.