Thank you, Dave, for this extremely valuable information.
I have the 4X4, automatic transmission, crew cab, duallies, 4.10, standard tires, no lift.
If I am adding it up right, I should get 19-20 minus 2 for 4X4 minus 2 for automatic minus 1 for duallies minus 0.75 for crew cab minus 1 for 4.10 equals 12.25 to 13.25 mpg.
What can I do? Should I mod it to run on wvo? Do I have any other options?
2001 F350 XLT 4X4 crew cab, dual rear wheels, long bed, black, 7.3l turbo diesel, automatic transmission, 4.10, shift on the fly, running boards, sliding rear window, 38 gal fuel tank, Odyssey extreme 65-PC1750T batteries, Michelin LTX-MS2 rear tires, Sumitomo Encounter front tires, Shell Rotella Ultra elc, 11,500 gvwr, 20,000 gcwr, 7500 gvw, completely stock, 114,000 miles when purchased, now has 250,000 miles, repairs so far: two starters, batteries, cps, brakes, tires, alternator, ball joints, locking hub, wheel hub, AC compressor, serpentine belt, power steering pump, driver's side window, ignition switch, o-ring, Spectra premium radiator, water pump, fan clutch, fan blades, thermostat, thermostat housing, tensioner. Stolen twice so far, but recovered both times with major damage.
2005 Nomad Rampage toyhauler made by Skyline. 11,500lb gvwr.