Just when consumers got beyond the "fiscal cliff," they may now have to contend with the "blend wall"—the latest policy catchphrase that could affect prices at the pump.
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In an attempt to spur usage of biofuels, the EPA mandated that refiners blend a given amount of ethanol into gasoline. That requisite number of gallons of renewable fuels required has risen over time, and is set to rise further.
Currently, only about 12 million vehicles are approved to use E15 gasoline, leaving approximately 228 million vehicles on America’s roads that are incompatible with the new fuel.