[img]/forums/images/icons/tongue.gif[/img] Propane would be our choice as well, but mainly because we have tanks of it sitting here already for the furnaces in the house and in the shop. If we did have a diesel set we would need to figure out how to "rotate" the diesel so the tank stays fresh, and right now we don't have a diesel tractor, only a gasser. I don't know HOW these big outfits can store genset diesel for long periods of time and not have it go bad? Hospitals run the generators weekly for about an hour at 70% load or thereabouts so that does use some fuel. I tested a genset once that used THIRTY-FIVE GALLONS PER HOUR during the test run. It was a 16V-92 detroit; that's sixteen cylinders at 92 cubic inches per jug.....over 24 liters of Screaming Jimmy. [img]/forums/images/icons/crazy.gif[/img]