Clean Fuels are fuels that are treated with ethanol to produce fewer greenhouse emissions. There are numerous types of clean fuels based on the percentage of the ethanol or biodiesel mixed with conventional fuel.
Ethanol was initially used as a fuel and as a form of alcohol among fifteenth-century Scots in what was called Moonshine Whiskey. Centuries later when Henry Ford unveiled his Ford Model T, it was intended for these machines to run on ethanol but the vast quantities of oil deposits for gasoline and diesel fuel made using fossil fuels a far cheaper choice.
At the beginning of the twenty-first century, ethanol returned to motor vehicles (though it was gaining traction during the late twentieth century) with the biofuel being mixed with oil and diesel.
“Ethanol Fuel History.” Fuel-Testers. http://www.fuel-testers.com/ethanol_fuel_history.html. Accessed July 28, 2016.
Recycling Nation. “Clean Fuels.” Recycling Nation. http://recyclenation.com/green-glossary/clean-fuels. Accessed July 25, 2016.
Union of Concerned Scientists. “Clean Fuels.” Union of Concerned Scientists. http://www.ucsusa.org/clean-vehicles/clean-fuels#.V5eF7FUrLIU. Accessed July 26, 2016.