| abstract |
Fuel compositions containing an additive combination comprising an oxy compound and a dispersant. Oxy compounds include glycol, polyglycols, and carboxylic acid esters thereof and carboxylic acid esters of monoethers of glycols and polyglycols. The dispersants are the esters, amides, imides, amidines, amine salts, and mixtures thereof of carboxylic acids characterized by the presence of at least about 30, but preferably at least 50, aliphatic carbon atoms in the acyl moiety. Solutions of such additive combinations are also disclosed. The fuels and solutions can be used to clean fuel systems in liquid-fuel burning devices such as internal combustion engines. |