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With the introduction of Bio-Ethanol in our gasoline came a boat load of problems so speak. The
affects of Bio-Ethanol was never tested properly before its introduction thus leaving many in various
industries to foot an ongoing, unnecessary and most of the time very expensive bill. Even some aircraft using
automotive based gasoline was affected.
Bio-Ethanol is created when crops such as sugar-cane, maize, sorghum, wheat and other grains, or
even cornstalks, fruit and vegetable waste is fermented and is diluted with gasoline. Ethanol blends
dramatically reduce emissions of hydrocarbons, a major contributor to the depletion of the ozone
layer.
Since the introduction of Bio-Ethanol, the problems with gasoline are slightly different, but
nevertheless just as alarming. Bio-Ethanol will absorb water as it is very hygroscopic, absorbing moisture
from the atmosphere directly into the fuel molecules; where as any water found in gasoline sinks to the
bottom of the tank.
For the retailer and end user, this is a very serious problem as this could lead to “phase
separation”.
What is phase seperation?
When gasoline containing small amounts of Ethanol comes in contact with water,
either liquid or in the form of humidity; the Ethanol will pick-up and absorb some or all of that water. When
it reaches a saturation point the Ethanol and water will Phase Separate.
Phase separation is where the water content in the fuel tank
builds up to a certain level where separation of the ethanol and gasoline takes place. Recent reports have
suggested that a fuel tank content of just 0.35% of water will lead to phase
separation.
What you are left with then is a layer of water on the bottom of the tank, above
it will be the layer of ethanol and above that will be the remainder of the unleaded gasoline. This fuel is
then deemed useless and if used can cause many fuel and engine related problems.
No where is this more prevalent than in the marine industry where thousands of dollars are spent to rebuild
engines and replace fuel related components.
It is therefore a good idea to manage fuel as closely as possible. Try to ensure that fuel tanks are empty when the
boat, Jet Ski or related water based gasoline engine driven equipment are stored for periods of time. This is true
for some aircraft, especialy those using automotive gasoline blends
Fuel injector maintenance such as fuel injector cleaning and flow testing should be done on a regular bases. It
is also recommended that HPDI pumps are properly cleaned and serviced on a regular bases because the fuel that
cause dirty injectors or clogged injectors are pumped through these very expensive and sensitive fuel pumps.
Using gasoline as a fleet operator or for your family car, classic car, boat, personal water-craft,
motorcycle, ATV, snowmobile, RV, lawnmower, weed-whacker, generator, or any of the thousands of other types of
equipment that use gasoline engines; you are being affected by Bio-Ethanol in your fuel.
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