LUBRICATING OIL COMPOSITION Russian patent published in 2012 - IPC C10M161/00 C10M145/28 C10M129/74 C10N30/06 C10N40/25 

FIELD: chemistry.

SUBSTANCE: composition contains base oil, at least one glycerine ester selected from glycerine monooleate and/or glycerine dioleate, optionally in combination with glycerine trioleate, at least one dispersion medium which improves the viscosity index of additives, and at least one additional polybasic alcohol ester. The additional polybasic alcohol ester is selected from glycerine stearates, neopentyl glycol esters such as neopentyl glycol oleates, pentaerythritol esters such as pentaerythritol oleates and trimethylol propane (TMP) esters such as TMP oleates and TMP stearates. The dispersion medium, which improves the viscosity index of additives, is a polyalkylene glycol an polymethacrylate copolymer of formula I

, in which n denotes a whole number from 1 to 20, preferably from 10 to 20, m denotes a whole number from 75 to 200, y denotes a whole number from 2 to 6 and x denotes a whole number from 200 to 600.

EFFECT: reduced friction and fuel saving.

6 cl, 2 tbl, 4 ex, 1 dwg