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E85 is an abbreviation typically referring to an ethanol fuel blend of 85% ethanol fuel and 15% gasoline or other hydrocarbon by volume. In the United States , the exact ratio of fuel ethanol to hydrocarbon may vary according to ASTM 5798 that specifies the allowable ethanol content in E85 as ranging from 51% to 83%. [ 1 ]
In the aftermath of Hurricane Katrina in 2005, the price of E85 rose to nearly on par with the cost of 87 octane gasoline in many states in the United States, and was for a short time the only fuel available when gasoline was sold out, but within four weeks of Katrina, the price of E85 had fallen once more to a 20% to 35% lower cost than 87 ...
As of early November 2010, the US average spread between the price of E85 and gasoline was 13.4%, while in Indiana was 10.1%, in Minnesota 20.3%, 18.3% in Wisconsin, just 2% in Maryland, 16.3% in California, and 7% in Utah. [25] Depending on the vehicle capabilities, the break even price of E85 has to be between 25 and 30% lower than gasoline. [3]
High percentage ethanol mixtures are used in some racing engine applications as the very high octane rating of ethanol is compatible with very high compression ratios. Ethanol fuel mixtures have "E" numbers which describe the percentage of ethanol fuel in the mixture by volume, for example, E85 is 85% anhydrous ethanol and 15% gasoline. Low ...
Premium Plus grade fuels are exempted from having an ethanol blend, [76] although the only Premium Plus grade available without ethanol is Petron Blaze and is rated at 100 RON. Other Premium Plus grades like Seaoil Extreme 97, Shell V-Power Racing and Unioil Gas 97 are rated at 97 RON, while Phoenix Premium 98 is rated at 98 RON.
More than 4 million flexible-fuel (capable of running on E85 as well as gasoline) vehicles exist in the United States. About 400 filling stations exist in the US that sell E85 fuel, mostly in the Midwest. Gasoline prices rise as ethanol prices stay the same, due to rapidly growing ethanol supply and federal tax subsidies for ethanol.
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By early 2013, about 11 million E85 flex-fuel cars and light trucks were in operation, [10] [11] though actual use of E85 fuel was limited, because the ethanol fueling infrastructure was limited. [46] As of 2005, 68% of American flex-fuel car owners were not aware they owned an E85 flex. [12] [13] Flex and non-flex vehicles looked the same ...