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"The American Petroleum Institute said research on the use of ethanol in gasoline finds it may damage the engines of vehicles for model years after 2001."^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.upi.com/Business_News/Energy-Industry/2013/01/30/API-again-cites-engines-woes-with-E15/UPI-41351359545442/?rel=68711362142262>