Patent ID: 8603955

Claim:
A lubricating oil composition, comprising: a lubricating base oil; an organic molybdenum compound selected from molybdenum-amine complexes, wherein amine compounds constituting the molybdenum-amine complexes are selected from the group consisting of monoamines, diamines, polyamines, and alkanol amines; and an aromatic compound having a structure represented by the following General Formula (1): (R) a -A-(X) b (1) wherein A represents an aromatic ring, X represents a monovalent functional group having at least one nitrogen atom, oxygen atom or sulfur atom, R represents an organic group having 1 to 40 carbons with the proviso that the tert-butyl group is excluded, a represents an integer of 1 or greater, b represents an integer of 1 or greater when A is an aromatic carbocyclic ring, and b represents an integer of 0 or 1 or greater when A is a heteroaromatic ring.