With gas prices continuing to stay high, many people are looking at other fuel options, such as, for example, diesel fuel. Ethanol is another alternative fuel option that can also save you some money at the pump. Ethanol, grain alcohol made mostly from corn in the U.S., has seen a resurgence in interest lately, including new federal mandates to produce at least 36 billion gallons of biofuels by 2020. Most ethanol today is blended into gasoline in a mixture called E10, 10 percent ethanol to 90 percent gasoline. All new cars can use E10. More controversial is a small amount that is blended into a mixture of 85 percent ethanol and 15 percent gasoline called E85, which only a small percentage of cars can use without damage to their fuel systems. Engineers are developing ways to make ethanol out of material other than food stocks,...
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