You can make ethanol-free fuel at home using only water! Simple, too! The secret is in the fact that water and gasoline do not mix, while water and ethanol have a great affinity for each other. What you do is get a clear container like those square 5 gallon jugs popular with motorcycle racers. Put in 4 gallons of ethanol-containing gas and add 1 gallon of water Cap it and shake vigorously to mix the gas and water, then let it sit for a few hours. The ethanol combines with the water and the water, being heavier than gas, will settle to the bottom of the jug. What is now floating on top of the water is pure gasoline. You can siphon the gas off or go to the bottom of the jug and siphon the water/ethanol out. Or get fancy and add a spigot to the jug to drain the water junk out.
One caution: 87 octane gasohol (10% ethanol) is made from about 81 octane gasoline, and the ethanol brings the final octane up to 87. To end up with 87 octane pure gasoline, you have to buy 92 octane premium and remove the ethanol from it because they add ethanol to 87 octane regular to end up with 92 octane premium. This is according to a friend who works for a fuel distributor who buys direct from a refinery nearby in New Mexico.
One caution: 87 octane gasohol (10% ethanol) is made from about 81 octane gasoline, and the ethanol brings the final octane up to 87. To end up with 87 octane pure gasoline, you have to buy 92 octane premium and remove the ethanol from it because they add ethanol to 87 octane regular to end up with 92 octane premium. This is according to a friend who works for a fuel distributor who buys direct from a refinery nearby in New Mexico.