The Truck is a 2013 F350 4x4 DRW CC 6.2L 4.3 in Lariat trim carrying an AF 1150. The truck has a GVWR of 14,000 and the one time I weighed the truck and camper with full tanks and loaded for travel it came in at 13,700 pounds.
"MPG: For the whole trip I averaged 9.1 mpg. Big deal here is speed and wind (not really mountain passes. For those you get poor mileage up but make it up going down). For my rig 63 - 65 mph seems to be the sweet spot in that I get decent gas mileage with decent speed. Above 65 the mileage drops pretty fast. I think I was getting 7.5 at 80 mph. At 40 - 45 (construction zones) I was getting great mileage but that is too slow. Not surprisingly wind can make a huge difference. For part of the trip we were getting 30 mph winds with 40+ mph gusts. Cruising with that wind largely at our back I was getting 12.5 mpg. Fighting the wind I was in the 7's at 65 mph."