▎ 摘　　要

NOVELTY - Engine lubricating composite additive comprises 1-20 pts. wt. polyisoprene, 1-10 pts. wt. polystyrene, 1-10 pts. wt. 2-methyl-1,3 butadiene, 1-5 pts. wt. graphene, 1-5 pts. wt. antimony trioxide, 1-5 pts. wt. antimony oxide, and 1-5 pts. wt. calcium carbonate. USE - Engine lubricating composite additive in engine lubricating base oil (claimed). ADVANTAGE - The engine lubricating composite additive is helps to improves anti-abrasion performance of engine and reduces noise of engine, and inhibits generation of sludge. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for engine lubricating base oil, which comprises mineral base oil, a synthetic base oil, and a vegetable oil base oil.