Fuel Quality Program

Fuels Tested

Gasoline
Gasoline is a complex mixture of relatively volatile hydrocarbons that vary widely in their physical and chemical properties. The fuel quality program inspects and tests all grades of automotive gasoline, gasoline-ethanol blends, E-85 ethanol, aviation gasoline and racing fuels. The fuel properties must be balanced to give satisfactory engine performance over an extremely wide range of operating conditions. The prevailing standards for fuel represent compromises among numerous quality, environmental, and performance requirements. Antiknock (octane) rating, distillation characteristics, vapor pressure, sulfur content, oxidation stability, corrosion protection, and other properties are balanced to provide satisfactory vehicle performance. Additives are often used to provide or enhance specific performance features.

Distillate Fuels
Distillate fuels encompass a broad class of motor fuels, including: No. 1-D and No. 2-D diesel fuel; No. 1 and No. 2 fuel oil; No. 1-K and No. 2-K kerosene; Jet A, Jet A-1 and Jet B aviation fuel.

For further information contact the Fuel Quality Program.