DW and I just did a run from Canada to St. Pete's Beach Florida with our 2010 Georgetown 330TS towing our 2006 Pontiac G6 toad. We wanted to get the rig into warmer climates so we wouldn't have to worry about winterizing. We will return South right after Christmas and spend the winter hiding out in warmer temps (we hope)
In the MH, we were packed with all our clothing we'll need for our time there. Food-wise, only non-perishables on board. Everything else is always on board to survive comfortably.
I set the cruise religiously at 60MPH for the entire trip. The specs for the toad specify NOT to exceed towing at speeds over 65MPH.
The result? Calculations showed 7.8mpg for the 1568 mile trip.
That Ford V-10 does the job perfectly, and seems to provide mileage in line with earlier posts for fuel consumption.