Yeah I think they all are going to be propane. Artic fox has 3.6 kw gen onan gen option. I think if you custom build from the sheet they may add a fuel tank for ya...
But if you have 30 lb LP bottles on the front the onans use .5 gph @ 50% load.
If you did run something 50% load ( I doubt) all day you can run 28 hours.
Id rather have a clean burning propane gen before gasoline...
What are you trying to run?
I use a 1100 watt inverter and plug the camper to it. It poweres all I need. Coffee maker, tv's toaster oven... Refridge if needed... etc..
Just no microwave, a/c, and HWH... We dont use micro anyway, a/c not needed, and HWH runs on gas, as well s refridge...Plus I have an oven...
