FIELD: chemistry.
SUBSTANCE: present invention relates to use of an aromatic amine in a lubricant composition for providing an ignition advance setting of an internal combustion engine with spark ignition which is 0.5 or more CAD (crankshaft turning angle), where the lubricating composition contains (i) base oil and (ii) from 3 to 20 wt. % aromatic amine, as an antiknock additive, wherein the aromatic amine is selected from aniline and alkyl-substituted aniline compounds, 1,2,3,4-tetrahydroquinoline, diphenylamine and alkyl-substituted diphenylamine compounds, 2-ethylhexyl-4-(dimethylamino)benzoate, indoline, N,N-dimethyl-1,4-phenylenediamine, o-toluidine, p-toluidine, p-anisidine, p-phenetidine and mixtures thereof.
EFFECT: disclosed is use of a lubricant composition.
5 cl, 4 tbl
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