ADDITIVE COMPLEX FOR MOTOR OILS FOR HIGH-AUGMENTED DIESEL ENGINES, AND MOTOR OIL CONTAINING THIS COMPLEX Russian patent published in 2004 - IPC

FIELD: lubricants. SUBSTANCE: invention relates to additive compositions and motor oil compositions containing the latter intended for oiling high-augmented, preferably high- power diesel engines. Additive complex contains, wt %: alkaline calcium sulfonate 9.0- 23.0, zinc dialkyl dithiophosphate or boron-containing zinc dialkyl dithiophosphate 13.0-16.0, ethylenediamine- based ethylene oxide/propylene oxide bloc copolymer 0.9-1.1, phenyl-α--napthylamine or modified alkylphenol- hexamethylenetetramine (or ammonia and formaldehyde) Mannich condensation product 2.0-3.5, the rest being boric and oleic acid-modified high-molecular Mannich base. Mineral-based motor oil contains 9-11% of above- defined additive complex and 0.003-0.005% of antifoaming agent. EFFECT: increased high-temperature oxidation resistance, considerably reduced carbon and lacquer formation on parts of high-augmented engines, and prolonged lifetime of oil. 2 cl, 4 tbl