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I would like to know if I can remove the alcohol from my...

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Question by mogas
Submitted on 12/1/2003
Related FAQ: Gasoline FAQ - Part 4 of 4
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I would like to know if I can remove the alcohol from my mogas by adding water and shaking it up, letting it settle and poring off the gasoline. My real question is what will it do to the octane rating if say the mixture was originally 10% alcohol and 90% gasoline?

Answer by IDbuffalo
Submitted on 1/25/2004
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Yes, you can remove most of the alcohol by adding water, mixing, and allowing the alcohol/water to settle to the bottom.  However, be aware that impurities in the water may suspend themselves in the gasoline, creating a "dirty" look.

Removing ethanol from blended gasoline will lower the octane rating from two to three points.  For example, ethanol blended 88 octane will become 85 octane without ethanol.


Answer by JGMagoo
Submitted on 1/19/2005
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Yes, as it states in the above answer you could probably remove most of it. Now, however you would have the problem of being sure you removed all of the water. Plus, this procedure would be quite risky, and time consuming. Alcohol, itself is not a bad fuel. It has some good characteristics and some not so good. It is put in gasoline by the manufacturers to accomplish a purpose, not to cause trouble. (All Indianapolis race cars run on 100% alcohol. They don't get very good mileage, but they do make a lot of power.)
The "perfect" motor fuel has not been invented yet.
But when you consider Cost, Availability, Ease of production and distribution, Emissions, Energy Per Volume, Storage, Driveabillity, Starting, Noise, all taken  together, gasoline, at this point in time IS the perfect motor fuel.    


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