EPA WON'T APPROVE ETHYL'S GASOLINE ADDITIVE

The U.S. Environmental Protection Agency has denied a waiver for Ethyl Corp.'s manganese based unleaded gasoline additive, fearing it would increase hydrocarbon emissions. The additive, methylcyclotentadienyl manganese tricarbonyl (MMT), would have been used in a concentration Of 1/32 g of manganese/gal. MMT has been used in Canada for about 13 years.

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