Conventional Gasoline: Finished motor gasoline not included in the oxygenated or reformulated gasoline categories.
Finished Motor Gasoline: A complex mixture of relatively volatile hydrocarbons with or without additives, blended for use in spark-ignition engines.
Oxygenated Gasoline (Including Gasohol): Includes all finished motor gasoline, other than reformulated gasoline, having oxygen content of 2.0 percent or higher by weight.
Reformulated Gasoline (RFG): A finished gasoline, the composition of which meets the requirements of the reformulated gasoline regulations promulgated by the Clean Air Act.