I've been racing diesels since 99. The last Ford I bought was a 99 F350. I then went to the dmax, then to the dodge trucks.. I've always liked my old superduty's feel better than the others, though I was scared of the 6.0 motor. I'm considering buying a 2010 F250, and it seems to be offered with 3.55 and 3.31 gears. Can those that have the higher 3.55 and 3.31 gear ratios share their fuel mileage? I have a 69 camaro with a dmax as my fast diesel, and a kodiak 4500 to pull with. I just want a nice comfortable daily driver that gets decent fuel mileage. I'm currently driving an H2 that gets 11 mpg mixed driving. All shared info is appreciated.