▎ 摘　　要

NOVELTY - Lubricating oil additive comprises 24-30 pts. wt. graphene oxide, 16-20 pts. wt. nano copper oxide, 14-18 pts. wt. nanoparticle, 8-12 pts. wt. organic bentonite, 4-10 pts. wt. calcium tungstate, 6-10 pts. wt. silane coupling agent, 3-7 pts. wt. heat stabilizer, 2-4 pts. wt. antioxidant, 1-3 pts. wt. extreme pressure agent and 1-3 pts. wt. polyethylene glycol. USE - Lubricating oil additive used for construction machinery (claimed). ADVANTAGE - The additive reduces friction loss and repair wear loss. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for preparation of the lubricating oil additive comprising weighing each component, adding graphene oxide and polyethylene glycol, mixing at 850-950 revolutions per minute (rpm) for 35-45 minutes to obtain mixture A, adding organic bentonite, grinding for 8-10 hours to obtain mixture B, mixing mixture A, mixture B, nanoparticle, antioxidant, calcium tungstate, silane coupling agent and extreme pressure agent and mixing at 1200-1300 rpm for 1-2 hours.