[throwback]

No doubt alcohol in gas for a boat is bad news. Aside from the operational problems ethanol
left in the tanks for an extended time makes a mess out of the complete fuel system ie carbs injectors filters. I run a merc optimax and the mechanic who services the engine pumps all the fuel out of the boat in the fall. We then put ten or so gallons of 100 low lead
aviation fuel in run it thru the engine and then shut it down. Av fuel has an indefinate shelf
life and is is probibited by law to not have ethanol. It works alot better than stabil or the other fuel stabalizers. The problem is when ethanol sits it breaks down and alcohol is a powerful solvent as well as being anhydrous / sucks up water. Bottom line our govt got sucked in by the ag industry as a way of slowing down the flow of imported oil but in reality alcohol has a lot less BTUs than petrol so milage goes down so it tends to be a wash except for the folks who grow and sell corn