EPA's Tampering and Fuel Switching Programs

CED-79-47: Published: Mar 1, 1979. Publicly Released: Mar 1, 1979.

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Efforts of the Environmental Protection Agency (EPA) were reviewed to determine the effectiveness of the program to decrease tampering with automobile emission control devices and fuel switching. The practice of using leaded gasoline in vehicles equipped with catalytic converters and designed for unleaded gasoline, if widespread, will substantially increase pollutant emissions.

The problems associated with tampering and fuel switching primarily occur after the vehicle is put into service rather than as the vehicle comes off the assembly line. An active enforcement program against tampering practices would require large personnel resources and would probably be impractical at the Federal level. An effective public awareness campaign is the key factor in an antitampering program.

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