I know these things aren't exactly fuel efficient or bought for that purpose but what sort of mileage are you guys getting with the camper on and is your rig gas or diesel?
From Grangeville Idaho to Hamilton Montana over two passes and doing the Idaho speed limit...11+ loaded and 13+ empty with the mighty '94/460 gas....Got 10+ on the same trip with a 21ft class C/460-'93...
Like MK mentioned earlier,I can make it get less.....