E10 stores amazingly well. Back in the day it was common practice to put a bottle of HEET in a full tank of gas to absorb water condensation. Heet was nothing but ethanol. I have some gensets at work that can go a year or more without starting and they usually fire right up. The biggest problem with ethanol is that it contains roughly half the BTUs of gasoline so it requires twice as much to do the same amount of work. I've often thought that my ultimate automobile would be a lightweight ethanol powered hybrid that used home brew ethanol for the combustion engine. That would leave only the lubricating oil dependent on crude.
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