Regulator says gasoline now free of additive

The nation’s regulating agency said Tuesday that gasoline now is nearly free of the additive methylcyclopentadienyl manganese tricarbonyl provided by Afton Chemical of Richmond, Virginia.

Trace amounts were only found at two locations, said the Autoridad Reguladora de los Servicios Públicos.

Since October motorists have been complaining about problems with their vehicle engines because of the additive. Gasoline provided by the Refinadora Costarricense de Petróleo S.A. appeared to have far more than the recommended amount. The additive is designed to boost octane.

The refinery is believed to have made some cash settlements with motorists.

The regulating agency halted importations of gasoline with the additive in August when it first learned of the problem

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