I was advised this season by a marina owner who carries both Star-Tron and Sta-Bill that the Sta-Bill formulated for ethanol was probably my better choice because I have an older boat (1990) with a metal gas tank. The Sta-Bill is supposed to prevent the reaction that some metals have that NoRegrets described in his Lexus recall.
I used Star-Tron on my outboard and while it got the engine running again with bad gas it didn't run well and still allowed a build up of sludge in the gas tank to the point where I by-passed the inboard tank in favor of portables, not something I want to do at the lake.
The other thing I am doing is keeping the gas tank full full full when I am not going to be using the boat for over a week. Leaves less room for moisture to form.
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