FIELD: lubricants. SUBSTANCE: concentrate contains, wt %: oil-soluble molybdenum additive 0.05-5, base synthetic material 10-95, dry polytetrafluoroethylene 0.01010, dispersing inhibitor (preferably zinc dithiophosphate) 0.5-35, index additive 0.35-25, and oil selected from group including mineral oil, polyolefins, diethers, and their combinations 5-95. Motor oil consists of the major amount of the above-defined motor oil and of a small amount of concentrate. EFFECT: improved wear resistance, oxidation resistance, viscosity stability, engine cleanliness, reduced fuel consumption, and improved blowdown characteristics and acid formation inhibition. 26 cl, 6 dwg, 3 tbl, 5 ex
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