I do 53mph as a standard pulling. We camp between Illinois and Iowa mostly. Winter trips are to Arizona with families. I average 10-11mpg, of course more with a tail wind, less with a head wind. Where ever we go the deisels blaze around us. More so on the mountians though. We go low and slow. It's ok though I'll get me a dually soon enough. Hope it will be a Tundra, cuz we love it.
Don & Dona W/yorkies Gizmo, Master Chief, & Tali
2011 Flagstaff 8528 BHSS 2015 Ford 6.7 XLT
2010 Full Timers & Still Going