▎ 摘　　要

NOVELTY - Lubricating oil composition comprises 85-95 wt.% base oil and 5-15 wt.% additives. The base oil is a modified vegetable oil, the additive comprises 15-18 wt.% alkylbenzene sulfonate, 22-24 wt.% high-viscosity polyalphaolefin, 12-15 wt.% synthetic ester, 15-18 wt.% anticoagulant, 5 wt.% antioxidant and anticorrosion agent, 2-5 wt.% extreme pressure antiwear agent, 5-10 wt.% metal detergent, 3-6 wt.% rust inhibitor, 2-5 wt.% viscosity agent and modified vegetable oil (balance amount). USE - Used as lubricating oil composition. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for preparing lubricating oil composition comprising (i) preparing lubricating oil additive, mixing the silver-coated graphene powder, metal detergent, dispersant, rust inhibitor, antioxidant, thickener, antioxidant and anticorrosion agent, and modified vegetable oil, carrying out low speed stirring at a speed of 3000-5000 revolutions/minute for 30 minutes, then mixing and stirring, performing ultrasonication for 20 minutes to obtain lubricating oil additives, and (ii) mixing the base oil and the additives, adding lubricating oil additives to the base oil according to the formula ratio, stirring evenly, and then placing in an ultrasonic oscillator to vibrating for 60 minutes, and mixing evenly to obtain final product.