Why don't you all run diesel engines, is a diesel nor offered? If my TV was a gas engine I'm sure I would be doing good to get 5 mpg towing 22,000 lbs counting the weight of our 5er and TV.
2014 Palomino Columbus 3650TH
435AH 12V VMax Charge Tanks, 520 watt Monocrystilline Solar Array, Morningstar MPPT TS-60 CC,Morningstar Remote,Cotek True Sine Wave Inverter,Cotek Remote Controller,50amp Progressive Hardwire Surge Protector
2015 Dodge 3500 6.7L 4X4
2011 CanAm Commander XT 1000