WTF?! Sorry, alcohol doesn't separate and turn to water. Alcohol absorbs water, water that condenses out of the air onto cold metal gas tanks. (Plastic gas tanks don't have near the problem with this.) That is why you top your tank off. Not only does the water rust the inside of the tank, it settles to the bottom of the tank and guess what gets sucked into your fuel system in the spring?I've used Startron, it seems to work pretty good in the bike, though my bike never really sits for very long anyway. A good method if you're not going to empty the tank is to keep the tank filled to the brim. That way there is less air inside the tank to react with the ethanol in the gas and cause it to separate and turn into water.
For my power equipment, I just get the tank empty before I put it away. Leave a tiny bit in the bottom of the tank and the fuel lines so the lines don't dry out.
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