Join Date: Jan 2011
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Re: Ethanol in gasoline questions
A boat is not a car. If a car's engine stops, you simply pull over to the side of the road.
If a boat engine fails 20 miles offshore while trying to get home ahead of approaching thunderstorms it is truly life threatening. If a fuel line on a car leaks a tiny bit, no problem, if a fuel line on a boat leaks vapor into the bilge, it is a major crisis and you might need to abandon ship before it blows up.
Cars can have sealed fuel systems but a boat cannot. As a matter of safety, a boat fuel system must be vented allowing humidity to get in, not to mention the nearly 99% humidity environment it works in.
Ethanol fuel has not saved an ounce of fuel in the USA because so much E10 contaminated with water has to be thrown away. This is true of both auto and marine fuels. However, go to any marine repair shop and ask how much E10 they throw away and you will be astonished. OH, and it is considered hazardous waste too.
Even the newest engines are unreliable running on E10 because of the water problem. When somebody is going 15 miles offshore, they totally fill their tanks as a matter of safety. They dont think, 'It's only 15 miles out and 15 back so it should only take 10 gallons", as a matter of safety, they fill their 20 gal tank and then fill two 5 gal jerry cans too. After their trip, the boat is likely to sit for weeks before the next trip allowing the fuel to go bad.
In my opinion, it should be illegal to put ethanol based fuel in a boat and if you advocate its use on boats, you have blood on your hands.