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Adam,
My guess is you may not have a choice in a few years. The additive MBTE is banned in 25 states and ethanol is the most likely replacement. Some states (I think Minnesota for one) require ethanol gasoline. The largest advantages of ethanol is that it replaces gasoline, could be cheap to make, and is somewhat renewable since it comes from corn. Other advantages are less certain. It could be a cleaner but there are better ones out there. It does increase octane. And in the winter it mixes with water to keep your gas dry. It does not ignite as well as gasoline so cold starting with higher blends can be a problem in winter. And there are more advantages and disadvantages being argued. Is it cleaner, what about the energy used to make it, etc.
Today, cars sold in the US are made to use gasohol to at least 10% and 15% is the new blend being touted -- for flexible fuel vehicles -- whatever that means. So there should be no problem using it.
ATB,
Tom
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