Old outboard engines susceptible to ethanol

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Ever since E10 gasoline (gas containing 10 percent ethanol) became widely available several years ago, the nation's largest recreational boat owners group, BoatUS, has received hundreds of calls and emails complaining about boat engine problems.

The majority of complaints concern older outboard motors, those made before about 1990. BoatUS' Seaworthy magazine asked Mercury Marine's Ed Alyanak and Frank Kelley, who between them have more than 60 years of experience, to find out what's made these decades-old outboards more susceptible to ethanol's well-known problems and what owners can do.

Click here for the full press announcement from the group.

Click here for information on ethanol and boat engines.