Home Green Cars 3 : Alternative Fuels 3.2 Biofuels 3.2.4 Butanol Butanol Vehicle Fuel 3.2.4  Butanol Butanol is an alcohol fuel and can be produced from the same crops as ethanol; mainly sugar cane/beet, wheat and corn. It can also be produced from fossil fuels. Butanol contains about 4.3% less energy than petrol (110,000 BTUs per US gallon compared to 115,000 BTUs for petrol). It is less corrosive than ethanol. In 2006 no production vehicles were known to be approved for use with 100% butanol. Information on butanol-petrol blends/ratios, level of production, usage, etc. required.   [ Back ]