The White House signed off on a gasoline pump label that would warn people when they are going to use gasoline with a fuel blended with a higher rate of ethanol. With the new label, E15 gas could be available everywhere by the end of September.
In January, the Environmental Protection Agency raised ethanol levels in gas to 15 percent from 10 percent for trucks and newer cars. The EPA must officially register E15 before it can be sold.
E15 is approved for vehicles built since 2001, a fleet of 150 million cars and trucks that consumes 74 percent of U.S. gasoline production.