E85 is a fuel blend of up to 85% ethanol and gasoline used in flex-fuel cars. It has a higher octane rating but delivers fewer miles per gallon than conventional gasoline. E85 requires a special retrofit of an engine and its fuel system. Ethanol is a renewable resource, but some feedstocks used for biofuels are inefficient. Aviation Ethanol 85 is a version of E85 for aircraft but faces challenges meeting aviation industry standards.
Ethanol 85 or E85 is a fuel that blends up to 85% ethanol with gasoline. This fuel type can be used in flex-fuel cars designed to run on blends of gasoline and ethanol. The use of E85 has been promoted as an alternative to fossil fuels that could reduce dependence on oil-producing nations for energy supplies, although there are some issues with this fuel product that need to be addressed. The availability of 85 ethanol varies, depending on where you live; the American Midwest, for example, has a number of sources for this fuel, while people in Canada may have more trouble obtaining it.
This fuel has a higher octane rating, which can contribute to greater efficiency. However, pure gasoline may not work effectively in the engine of a flex-fuel vehicle designed to operate on ethanol concentrations as high as 85%, which can be a problem when E85 is not available. Also, like other high-octane fuels, 85 ethanol delivers fewer miles (or kilometers) per gallon (or liter) than other fuels, meaning people may actually end up spending more on fuel with E85 than with conventional gasoline, depending on fuel prices.
This fuel also requires a special retrofit of an engine and its fuel system. Several automakers produce flex-fuel vehicles that can run on 85 ethanol or other ethanol/gasoline blends, including cars, light trucks, buses, and heavy trucks. In other cases, a vehicle may need to be converted to accept this fuel. Using 85 ethanol in a vehicle that isn’t equipped with it can have some unpleasant results, including damage to the fuel lines.
The supply of ethanol has also been raised as a concern by people who are concerned about the use of ethanol85. Ethanol is a biofuel, which initially sounds attractive because it is a renewable resource. However, some feedstocks used for biofuels are very inefficient, and some types of biomass used for ethanol production are actually so inefficient that more fuel is consumed than produced, which is a serious problem. Some critics are also concerned about the food versus fuel debate, which centers on the idea that some countries could replace food production with fuel production.
AGE 85 or Aviation Ethanol 85 is a version of 85 ethanol designed for use in aircraft. Aviation fuels have to meet some very specific standards which have made AGE 85 a tough sell to the aviation industry.
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