Ethanol is also referred to as ethyl alcohol or grain alcohol. According to BBI International (2003), ethanol’s primary uses in the U.S. are: as an octane extender for gasoline; as a clean-air gasoline additive in the form of an oxygenate; as a product to foster rural economic development; and as a domestic fuel source to aid in the reduction of U.S. dependence on imported oil. Ethanol blended fuels currently represent more than 12% of U.S. motor gasoline sales, and ethanol blends of up to 10% are approved under the warranties of all the major automobiles sold in the U.S.