AAA: E-15 gas could be harmful to cars
The new E-15 gasoline blend may not be safe for your car.
E-15 contains up to 15 percent ethanol.
AAA said sustained used could damage cars by accelerating engine wear and that it could void your vehicle's warranty.
The EPA approved E-15 for sale in June.
Automakers approved it for use in less than five percent of cars.