EPA ups amount of ethanol allowed in summer gas, but read your manual first

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The EPA last week approved higher amounts of ethanol blended into gasoline to be sold at gas stations in the U.S. during summer months, but many automakers warn against using fuel with more than 10 percent ethanol content in their vehicles. The EPA said that it will allow fuel with 15 percent ethanol content—marketed as E15 at pumps—to...

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