Ethanol is a clean-burning, high-octane fuel that is produced domestically from renewable sources. As an important part of the U.S. economy, ethanol helps to increase farm revenues grow and reduce this country's dependence upon foreign sources of energy.
Basically, ethanol is grain alcohol that has been produced from corn and other crops. Ethanol is blended with gasoline for use in motor fuels. Ethanol blends can decrease fuel costs and harmful tailpipe emissions; and increase fuel octane ratings.
Ethanol is appearing at more pumps and in more locations every year. In 2004, about one third of all gas in the U.S. was an ethanol blend. The most common ethanol/gasoline blends are:
E10 - 10% ethanol / 90% unleaded gasoline.
This most common blend of ethanol is approved for use in any make or model of vehicle sold in the U.S., with no modifications necessary to the engine.
E85 - 85% ethanol / 15% unleaded gasoline.
This alternative fuel is for use in flex-fuel vehicles (FFVs) - currently numbering more than 6 million on U.S. roads, with auto manufacturers producing more each year. To accommodate this increase in the number of FFVs, more E85 pumps are available nationwide. Where E85 is not available, FFVs can operate on straight gasoline or any ethanol blend up to 85%.