Boaters don’t have to be all at sea when it comes to protecting the planet from pollution. As petroleum companies stop blending fuels using the additive MTBE and begin using ethanol blends instead, many boat owners are floating some creative ways to deal with the issue.
MTBE has a superior capability to “oxygenate” fuel, reducing emissions. Unfortunately, the chemical has been associated with ground water pollution and is a growing liability issue for petroleum refiners. Ethanol solves the ground water issue, since it has a very short life in the environment before it is broken down chemically by nature. As a result, most refining companies are switching to ethanol-blended fuels. Those fuels, however, present a challenge for boaters.
While fuel blends using as much as 10 percent ethanol are approved for use in some outboards, there are three facts boaters should know:
1. Ethanol attracts and absorbs moisture from the air. That means boaters will likely face more fuel contamination issues from water absorbed through their fuel tank vents.
2. Ethanol is a solvent and can dissolve varnish and other material in fuel systems. In some...