Ethanol

Ethanol – As some of you may be aware, Washington State law will make the use of Ethanol Gasoline mandatory in the state by December 1, 2008. Chevron stations started the transition in May. The Shell Gasoline Brand will be begin the transition on June 1, 2008. This means that the Foss Harbors Fuel Dock will be forced to begin selling gasoline that contains 10% ethanol. Adding ethanol to fuel has many environmental advantages such as: carbon monoxide emission from fuel can be reduced up to 30%, reduces smog forming emissions and reduces emitted greenhouse gases. However, before you fill your boat with gasoline containing ethanol there’s a few things you should know:
1. Ethanol attracts water. Gasoline tanks containing more than .35% water are at risk of having ethanol phase separate into an alcohol and water layer. To avoid this, make certain there is no water in the boat’s gas tank before fueling with ethanol.
2. If storing the boat for more than 60 days, it is recommended that the tank be 7/8th capacity. Non ValvTec gasoline should be treated with ValvTect Marine Fuel Stabilizer.
3. Gasoline containing ethanol has been documented to cause a chemical reaction with the resin in some fiberglass fuel tanks. For boats with fiberglass fuel tanks, it is STRONGLY recommended that boaters contact their boat manufacturer to make sure their fuel tank is compatible with ethanol fuel.
4. Ethanol acts as solvent and will break down any deposits and sediment buildup. To prevent problems pump out all water and sediment in gasoline storage tanks and install special ethanol compatible fuel filters.
5. Rubber components in older engines may be susceptible to ethanol damage. All rubber components exposed to ethanol fuel should be inspected on a yearly basis by an experienced mechanic and replaced if necessary.
6. To provide the best possible performance, follow the marine engine manufacture’s recommendation for the minimum octane level.