Tetraethyl Lead or Lead

Tetraethyl Lead or Lead

An octane enhancer. One gram of lead increases the octane of one gallon of gasoline about 6 numbers.  The EPA has phased down the use of lead in gasoline as it has been determined to be a health hazard.  Lead has been prohibited in highway vehicle gasoline since January 1, 1996.

Tetraethyl Lead or Lead