| 简介 |
The present invention provides a fuel additive composition comprising (i) at least one primary antiknock component selected from (a) iron or an iron compound; (b) lead or a lead compound; (c) manganese or manganese compound; and (d) a metal selected from rare earth metals, lithium, nickel, and thallium or a compound comprising a metal selected from rare earth metals, lithium, nickel, and thallium; (ii) at least one secondary antiknock component selected from (a) oxyhydrocarbyl compounds; and (b) nitrohydrocarbyl compounds; (iii) at least one of (a) a sulphur passivating agent, (b) a material capable of preventing and/or inhibiting valve seat recession of an internal combustion engine. |
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