On Friday, the EPA released a long-awaited decision allowing the use of 15-percent ethanol in regular gasoline to be burned in cars made from 2001 to 2006.

The move is expected to lead to gas stations selling the fuel, known as E15, at specially labeled pumps around the country--but it does not require a blend greater than E10. (Read: "Move over E85, here comes E15. EPA proposes adding more ethanol to gasoline blends.")

Gas station owners, as well as makers of boats, snowmobiles, and yard equipment, resisted the move, saying the EPA's proposal for signage is inadequate and consumers might use the fuel in non-approved products, risking premature failure.