Hey all have an '89 F150 and want an F250 Superduty, newer around '99. Wondering what kind of gas mileage I could expect with the 5.4 V8 verses a 6.8 V10............not really interested in the diesel, although I know they hold up better. I don't want to believe what the ford website says you can get for mpg, I'd rather here from people that actually drive one and see what they get on an average day. Anyone that tracks their city/highway mpg thank you for your response!! And I know what everyones thinking, cause I know it to, "If your worried about gas mileage don't get a truck...." I'm just hooked on trucks now so its too late for a car..........