Lubricating oil composition and method of producing the same

A lubricating oil composition comprising:

• a base oil and a fullerene adduct,
• wherein the fullerene adduct is a compound obtained by adding at least one compound selected from the group consisting of 1,2,4-trimethylbenzene, a cumene, a compound having an ether bond, a compound having an ester bond, a compound having a phosphate ester bond, a compound having a disulfide bond, a compound having a phenol hydroxyl group, and a silicone, to a fullerene;
• wherein the compound having an ether bond is selected from the group consisting of polyalkylvinyl ether, dialkyl diphenyl ether, polyphenyl ether, tripropylene glycol, dipropylene glycol, triethylene glycol, tetrahydrofuran, and di-p-tolyl ether;
• and
• wherein the compound having an ester bond is selected from the group consisting of tribasic acid ester, ethyl acetate, octyl acetate, and polyol ester.