| abstract |
a gasoline fuel additive concentrate, a gasoline fuel containing an additive mixture, a method for reducing wear on an engine and a gasoline engine fuel distribution system, and a method for improving injector performance. the additive concentrate includes an aromatic solvent and a mixture containing (i) n, n-bis (2-hydroxyethyl) alkylamide, (ii) 2 - ((2- (bis (2-hydroxyethyl) amino) ethyl) amino) ethyl alkanoate and n- (2- (bis (2-hydroxyethyl) amino) ethyl) -n- (2-hydroxyethyl) alkylamide and (iii) fatty acid ester and amide (s) derived from a diethanolamine self-condensing product (dea) containing at least 3 amino groups. A weight ratio of (i) to (ii) to (iii) in the concentrate ranges from about 8: 2: 0 to about 2: 5: 3. The fuel additive mixture is substantially devoid of glycerin and remains fluid at a temperature up to about -20 ° C. |