Ethanol, E85, Flex Fuel…What Does It All Mean?

Ethanol as a Racing Fuel

Ethanol has made its way into auto racing, first in the Indy Racing League by 2007 and this year into all three NASCAR national touring series with “Green E15” as its official race fuel. The Indy cars now burn a pure 100 percent Ethanol blend (switching over from Methanol) but will make the switch to E85 for 2012.