FUEL OR LUBRICATING OIL COMPOSITIONS

1,241,327. Fuel; lubricant. ESSO RESEARCH & ENG. CO. 12 Sept., 1969 [19 Sept., 1968], No. 44637/68. Headings C5F and C5G. A fuel or lubricating oil contains minor proportions of (a) a C 10 -C 60 mono- or polycarboxylic acid, anhydride or ester thereof or the reaction product of such an acid anhydride or ester with a hydroxy compound or amino compound; and (b) an ester of an alkoxylated phenol-aldehyde resin. The fuel may be kerosene, gas oil, diesel fuel, aviation fuel or preferably gasoline. The lubricating oil may be an animal or vegetable fatty oil, a mineral oil or a synthetic diester or complex ester oil. Additives used in gasoline compositions in the examples are: (a) reaction product of tetra-propanyl succinic anhydride and N,N<SP>1</SP>-diethyl ethanolamine; product of oleic acid and hydroxy ethyl ethylene diamine; product of tetrapropenyl succinic anhydride and n-octanol, (b) palmitic acid ester of ethoxylated phenol-formaldehyde resin. Optional gasoline additives are Et 4 Pb, C 2 H 4 Br 2 , C 2 H 4 Cl 2 , organic esters of phosphorus acids, 2,4-dimethyl-6-t-butyl phenol and N,N<SP>1</SP>- di-sec-butyl-p-phenylene diamine.