FIELD: lubricant oils.
SUBSTANCE: invention relates to lubricant oil compositions, in particular, to lubricant oil used for reducers and heavy-loaded aggregate of transmissions of flying technique. Proposed oil comprises the following components, wt.-%: bis-[4-(1,1,3,3-tetramethylbutyl)phenyl]amine, 1.0-3.0; 3,5-bis-(1,1-dimethylethyl)-4-hydroxybenzopropanoic acid (C7-C9)-alkyl ester, 0.5-4.0; N,N-bis-(2-ethylhexyl)-4-methyl-1H-benzotriazole-1-methylamine, 0.05-0.25; mercaptobenzothiazole, 1.0-2.4, and pentaerythritol and (C5-C10)-fatty acids ester, the balance. Invention provides improving anticorrosive properties of lubricant oil and indices of its evaporation capacity at temperature 250°C.
EFFECT: improved and valuable properties of lubricant oil.
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