Ethanol at E15 Levels Is Bad for Boat Engines

A Sign Of The Times

This "no E15" warning sticker will be a common sight near the fuel fills of new boats.Kevin Falvey

You will now see this sticker warning against the use of ethanol blended gasoline containing 15-percent or more ethanol (E15) aboard new boats. Ethanol is bad for your boat’s engine, and its fuel system. Under no circumstances should you ever fuel up with E15. Read the pump label before fueling.

Learn more about ethanol and boats from the editors of Boating.

Takeaway: Current US ethanol output exceeds 15 billion gallons per year.