[bushpilot]

i have simular experience to bobs.
I just rolled 105k miles - and we're averaging about 15-18k a year

were get a very consistent 9.9 mpg (cruise set at 72mph).
the worst I've ever seen is 8.6 (hauling ass thru the mountains of tennessee to the northern tip of virginia).

our recent best was this past august - blacksburg va to ft walton beach at 12.8 mpg

the 12.8 included a few hours of generator run time - (sleeping in rest area w/ air conditioning) and we were pulling the jeep. That particular leg of our trip our speeds were slow (50's & 60s) for about have the drive (south of atlanta).

Our coach is a Freightliner Columbia (42ft, all house, no garage) w/ an MBE 4000 (12.8L, 450hp) & the 12spd Meritor/ZF Smart-Shift

Lightly loaded I top the scales around 26k thats w/ 1/2 tanks of water (120 gal) and 1/2 tanks of fuel….i need to reweigh w/ full tanks, clothes/food & the jeep (just for fun).