I just made a round trip from Lafayette, La. to /schulenberg, Tx. this last weekend. Truck is a '06 F250 FX4, short bed, 4 doors, tool box. Weighs 8000# with full tank and me in it. Got 19.3 mpg driving at 73 mph @ about 1900 to 1950 rpm. Truck has 6700 miles on it. Stock everything. Will change...