Patent ID: 8147568

Claim:
A diesel fuel composition comprising a diesel fuel, a colloidally dispersed or solubilised metal catalyst compound for diesel particulate trap regeneration and 10 to 1,000 ppm of an oil soluble or oil dispersible organic compound having a lipophilic hydrocarbyl chain having attached directly thereto at least two contiguous polar head functional groups, wherein the metal catalyst compound consists essentially of (a) one or more inorganic or organic compounds or complexes of sodium, manganese and platinum or (b) a mixture of inorganic or organic compounds or complexes of iron and one or more inorganic or organic compounds or complexes of sodium, manganese and platinum, and wherein at least one of the contiguous polar head groups of the organic compound is a carboxylic acid or carboxylate group, and the remainder are selected from carboxylic acid, carboxylate, ester or amide groups.