If you haven’t heard of E15–and AAA says 95 percent of people it surveyed have not–it’s a new type of gas blend. E15 contains up to 15 percent ethanol.
The motoring corporation says automakers have approved fewer than 5 percent of vehicles to use it.
AAA says sustained use could damage both older and newer vehicles by accelerating engine wear, which could void warranties.
The Environmental Protection Agency approved E15′s sale in June, but AAA wants the sales stopped until regulators can do a better job educating the public.