onthego-- Texas A&M says it as it is-- 10 mpg is about it with a gas motor with average terrain. Even without the tow / haul feature, you can shut off the overdrive in your tranny by pushing in on the button on the end your shift lever, a light on the dash should say ''OD OFF''or the end of the lever will say it. My F250 w 4:10's (due to snoplow prep)gets 9-10 mpg pulling our 19H. Either truck will due the job with a tow package. my motto " BUY AMERICAN"
Larry & Rachel Demers 2010 19H, 1999 F250 std cab 5.4, Auto, 4:10's 4x4