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bsmith0404 · 09-14-2015, 06:30 PM

I don't have an Onan, but with my generator I just add Sta-bil per the instructions on the bottle. I actually had mine sit for two years with the same gas in it, I just added a second dose of sta-bil for the second year. Didn't need to run it until half way through the 3rd year, but figured I better not press my luck and just ran the fuel out of it that spring and put new gas in. Did the same thing with my ATV. Sta-bil does work, no carb varnishing/gumming problems with either one.

09-14-2015, 06:30 PM	#2
bsmith0404 Senior Member Join Date: Mar 2014 Location: Las Cruces Posts: 4,665	I don't have an Onan, but with my generator I just add Sta-bil per the instructions on the bottle. I actually had mine sit for two years with the same gas in it, I just added a second dose of sta-bil for the second year. Didn't need to run it until half way through the 3rd year, but figured I better not press my luck and just ran the fuel out of it that spring and put new gas in. Did the same thing with my ATV. Sta-bil does work, no carb varnishing/gumming problems with either one. __________________ Brent 2013 Alpine 3500RE 2019 Silverado 2500HD Duramax U.S. Air Force Retired (25 yrs)