Program Description

No one wants water or any other foreign substance in their gasoline. That’s why the Missouri Weights and Measures Division is responsible for assuring that all motor fuels and other fuels meet minimum quality specifications. Through a vigorous program of inspection, sampling, and testing, the division protects Missouri consumers of petroleum fuels and products. The direct benefits are twofold: First, economic benefits are derived from consumers receiving quality products and services, especially in the areas of fuel quality, vehicle efficiency, and vehicle maintenance. Second, by monitoring compliance with air pollution control program and fuel quality specifications, the division promotes better air quality and more efficient fuel use.

Missouri’s Fuel Quality Law can be found in Chapter 414 of the Revised Missouri Statutes. Rules and regulations regarding fuel quality can be found in the Code of State Regulations, 2 CSR 90-30.040 (Select Chapter 30) Quality Standards for Motor Fuels. Most of the fuel quality regulations follow quality and testing standards developed by ASTM International (ASTM) Committee D-2 on Petroleum Products and Lubricants. An emergency amendment which relaxes the volatility standards for gasoline-ethanol blends is effective beginning January 14, 2008 and expires on July 2, 2008 2 CSR 90-30.040 emergency amendment.

The ASTM is a national voluntary consensus standards organization that develops and promotes standards on characteristic and performance of materials, products, systems, and services. Members include producers, end users, and governmental regulatory agencies.

ASTM specifications referenced by the regulations are:

D4814 Standard Specification for Automotive Spark-Ignition Engine Fuel

D910 Standard Specification for Aviation Gasoline

D1655 Standard Specification for Aviation Turbine Fuel

D975 Standard Specification for Diesel Fuel Oils

D396 Standard Specification for Fuel Oils

D3699 Standard Specification for Kerosine

D5798 Standard Specification for Fuel Ethanol (Ed75-Ed85) for Automotive Spark-Ignition Engines

D6751 Standard Specification for Biodiesel Fuel Blend Stock (B100) for Middle Distillate Fuels

D4806 Standard Specification for Denatured Fuel Ethanol for Blending with Gasolines for Use as Automotive Spark-Ignition Engine Fuel

D6227 Standard Specification for Grade 82 Unleaded Aviation Gasoline

Copies of these specifications can be obtained for a fee from:

ASTM International
100 Barr Harbor Drive
West Conshokocken, PA 19428
Phone: (610) 832-9500
Web Site: http://www.astm.org

For further information contact the Fuel Quality Program.