Fuel Additives and the Texas Clean Fleet Program
Fuels and fuel additives are regulated solely by the U.S. Environmental Protection Agency (EPA) through its registration and evaluation processes. All fuel additives must be evaluated and approved for vehicular use. The EPA is the only authority charged by congressional mandate to evaluate fuel economy devices, emission control devices, and fuel additives.The EPA's vehicle certification process is used by manufacturers to demonstrate that a vehicle complies with all relevant emission standards before it is offered for sale to the public as a "certified" vehicle.
For information on EPA's fuel additive registration and evaluation process and for contact information, visit the EPA's Office of Transportation and Air Quality.