| Subject: Here's some info on what e10 is doing. |
Author:
larry
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Date Posted: 06:07:29 11/11/07 Sun
In reply to:
Duncan7
's message, "Re: Here's some info re the susidies that go to ethanol." on 15:02:46 10/28/07 Sun
http://www.practical-sailor.com/tools/ethanol-fuel-and-outboard-engines.html
The final nail in the E10 coffin is ethanol’s affinity for water it absorbs it and holds it in suspension, to a point. In some cases, this may be desirable. Some water-absorbing "dry gas" products allow water to be suspended and then burned with the fuel. But too much water can present a problem. If the water content of the tank rises much above 0.5 percent that’s half a gallon in a 100-gallon tank the ethanol’s water-supporting capacity will be overwhelmed. This is called phase separation. The ethanol/water mix will drop out of the fuel and sink to the bottom of the tank where your engine will suck it up. Engines don’t run well, if at all, on this gelatinous mixture. Plus, the remaining fuel in the tank, now devoid of the ethanol, will be of a significantly lower octane rating, as low as 83, which will also lead to running problems.
E10 fuel is apparently less stable than ordinary gasoline, on the order of 60 to 90 days. So some experts are now suggesting, contrary to previously held wisdom, that tanks be stored empty rather than full. A tank full of E10 may spoil, and it will tend to absorb water through fuel vents, leading to more trouble for the tank and the engine. Fuel stabilizers will help and should be used even for short-term fuel storage; however, seasonal lay-up is probably too long to rely on additives.
Evidence indicates that 40 percent of all service stations will be selling E10 by the time you read this, and that number is likely to grow. What’s next? E20, and some locations are offering E85.
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