Originally Posted By: Dave Sherman
My inverter generator calls for 15W-40, but Rotella 5W-40 was highly recommended for hot-running, hard working air cooled engines.
Same here and I been running the Rotella 5w-40.
I run it monthly under load, check oil etc.
To keep track of the hours on the oil, I write it on the housing with a grease pencil (china marker). Just rub off and write the new hours after each run. I also run in even hours, 1, 2 3 etc. That way I don't have to track fractions of an hour. Getting older, I just have to remember to write in and not rely on brain matter.
I use grease pencil on the motorcycle windshield for directions and notes too - once had the GPS go whacky while riding out of town.
Anyway I run a hour or two a month on the inverter generator and track it. It's like a monthly PM exercise. Ran a couple days ago using the electric smoker for a couple hours.
Stabil, marine blue stuff that can also be used with some ethanol in the gas.