The advice to not use ethanol gas is not an option. There is perhaps one gas station withing 25 miles of me that sells non-ethanol gas. On the road it will be even more difficult to find non-ethanol. Since the generator is built into my coach and feeds off the main fuel tank, it gets what it gets. being in the marine industry for 40 years, the ethanol issues are not new to me. Why I ask my question is because this is a 16-year-old coach and generator and older models are more susceptible. If you generator is even 5 years old, it probably does not have the same components as mine. I like the Seafoam additive for marine applications so I will give that a try. My tank will require five 16 oz. bottles. The genny does get a lot of running right now, almost daily with the air conditioners on. Chuck