 Mixed driving around town and highway the truck, unloaded, operated at 14.2 MPG.  Used the truck on a 3500 mile trip loaded with a slide-in camper - it did not do so well.  Operated at 10.0 to 13.5 MPG depending on terrain and wind conditions.  Struggled with  highway speeds - most times could not maintain highway speed - disappointed with the lack of torque and power.  The drive train needs to be repaired as the universal joints are already sloppy (they clang-ring whenever transmission is put into 'D' or 'R' from 'P').  From all indication the title 'super duty' is a misnomer. Camper weight = 2240 lbs, only a fraction of what FoMoCo advertises the truck can handle.  Pretty sad indeed. 