I strictly run ethanol free fuel in my rig now. My old 2 stroke would cough and sputter when I ran ethanol blended fuel through it. It stopped sputtering when I stopped using fuel with ethanol. My new rig hasn't had a drop of ethanol in the tank yet...hope to keep it that way. I have a new 4 stroke now and I know the ethanol isnt as big of an issue now as with older outboards, but I figure if I can put 100% gasoline in my rig, then I might as well. It also helps to keep water out of your tank if you plan on letting your boat sit for a long time. Ethanol draws in moisture and could potentially make your fuel tank more prone to getting water in it if it sits in a humid environment for an extended period of time.
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