| abstract |
The present invention provides an additive composition for fuel, a fuel composition, and methods for and uses of such compositions. In particular, the present invention relates to compositions which may be used to reduce the soot content and the ash content of an exhaust of a combustion system for fuel. In particular, the compositions comprise: (i) a metal compound selected from an iron compound, a manganese compound, a calcium compound, a cerium compound and mixtures thereof; and (ii) an organic compound selected from a bicyclic monoterpene, substituted bicyclic monoterpene, adamantane, propylene carbonate and mixtures thereof. |