Ethanol
Ethanol is an alternative energy. It’s a renewable fuel, made from corn and other plant materials. Using ethanol can reduce oil dependence and greenhouse gas emissions. Ethanol used in the United States has increased very much from about 1.7 billion gallons in 2001 to about 13.2 billion in 2003.
E10 and E15 are blends of gasoline and ethanol, the number after the “E” indicates the percentage of ethanol by volume. Most of the gas sold in the United States contains up to 10% ethanol. All auto manufacturers approve blends up to E10 in their gasoline vehicles. Since ethanol contains about two-thirds as much energy as gasoline, vehicles mostly go 3% to 4% fewer miles per gallon on E10, 4% to 5% fewer on E15 than on 100% gasoline. E85 which