MOTOR FUEL ADDITIVE AND MOTOR OIL CONTAINING THIS ADDITIVE Russian patent published in 1998 - IPC

FIELD: motor fuels. SUBSTANCE: additive contains, wt.-%: calcium sulfonate, 30-55; sulfured calcium (C₉-C₁₂)-alkylphenolate with alkalinity 140-250 mg KOH/g, 10-55; sulfured (C₉-C₁₂)-alkylphenol, 5-15; product of successive treatment of (C₈-C₁₂)-alkylphenol by phosphorus pentoxide, zinc oxide, and alifatic amine having 3-5 N atoms, the balance. Motor oil with mineral and/or synthetic origin contains 4-10 wt % of aforesaid additive and optionally thickening additive, pour-point and foam depressants. EFFECT: increased lifetime of oil and internal combustion engine. 3 cl, 3 tbl