My 7.5 KW Onan (2 cyl, air-cooled) is fueled by propane. It was originally built as a "gas-gaso" generator and fueled by gasoline; the army used it to operate pop-up targets on the tank gunnery range of a central California military base. I had it converted to propane, gave it a "major service" and a new muffler, and installed it next to the 200 gallon propane tank that runs the appliances in my home.

The fuel is always fresh, the oil stays remarkably clean (I run the generator for an hour or so once a month to check it out – yes, I put a load on it – and keep the battery charged) and every once in a while we have a power failure and we get to use it. With all of the high-heat loads on propane, the generator will run the whole rest of the house.

Jeremy

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"Buster" in the '95

Our all-Diesel family
1996 E300D (W210) . .338,000 miles Wife's car
2005 E320 CDI . . 113,000 miles My car
Santa Rosa population 176,762 (2022)
Total. . . . . . . . . . . . 627,762
"Oh lord won't you buy me a Mercedes Benz."
-- Janis Joplin, October 1, 1970