LUBRICANT COMPOSITION Russian patent published in 2015 - IPC C10M139/00 C10M159/12 C10M169/04 C10N30/00 C10N30/04 C10N30/10 C10N40/12 

FIELD: chemistry.

SUBSTANCE: present invention relates to a lubricant composition which includes base oil and one or more additives, wherein the composition includes a detergent additive which is a reaction product of an acidic organic compound, a boron compound and a basic organic compound of general formula where a equals 1 or 2 and where R¹ and R² are independently selected from hydrocarbon groups, provided that when a equals 2, groups R¹ and R² are selected independently, and has sulphate ash content (according to ASTM D 874) of at least 0.1 wt % and at most 0.60 wt %; and a total base number (TBN) (according to ASTM D 2896) of at least 8.0 mg KOH/g and at most 15.0 mg KOH/g, potassium content (according to ASTM D 4951) higher than 0.10 wt % and at most 0.15 wt %.

EFFECT: present invention relates to use of a lubricant composition in a gas engine to improve oxidation resistance and maintain the base number.

5 cl, 3 ex, 2 tbl