man that does suck but not all that bad....what motor / trans / axle ratio set up do you have ?
folks in my same storage lot are lucky if they get 6mpg in their pusher coaches w/out towing ANYTHING.
i run a consistent 9.6 - 9.9 at 75mph...once i get in the mountains (Tennessee thru Virginia) i fall of to high 8's and thats w/ a fairly heavy foot 75mph and passing...and thats not towing ANYTHING. Im about to add a jeep but dont expect much mpg impact.
the previous owner of our coach pulled a 36ft stacker and got a claimed high 6's at 75+ mph (scarey)...and he said that was the worst he'd seen.
'04 Haulmark (M42386) 42', 2 slide, 10kw - Pictures
'04 F350 CrewCab Longbed 4x4, 50g aux tank & gear vendors dbl over