Most gas stations in Ky have ethanol fuel. I would run Marine Formula Stabil,Seafoam or Starton in every tank year round. In the off/winter season I would give it a storage dose. Ethanol fuel draws mositure faster,breaks down/phase seperates faster and is more corrosive to rubber gaskets and fuels lines than non ethanol fuel.

I run Marine Formula Stabil year round 1 oz to 10 gallons and 1 oz to 5 in the winter. I have seen what the effects of ethanol fuel going bad looks like...If it runs on gas and sits unused for prolonged periods I treat the fuel...chainsaw,weedeater,leaf blower,garden tiller,4 wheeler.