▎ 摘　　要

NOVELTY - Graphene-containing engine protective agent comprises 1-3 %mass nano graphene, 0.5-1 %mass dispersant, and remaining of base oil. USE - As graphene-containing engine protective agent. ADVANTAGE - The graphene-containing engine protective agent uses high-purity graphene, is not easy to precipitate, does not produce any chemical reaction with the metal surface of the automobile engine completely through physical adsorption film to protect the engine inner wall to generates lubricating effect. The method is simple and has excellent effect. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a method for preparing a graphene-containing engine protective agent comprising (a) first, adding the dispersant to the base oil and stirring at medium speed for 30 minutes, and (b) adding the nano graphene to the base oil at a uniform speed, stirring at high speed with a multi-stage high-speed disperser for 2 hours, and leaving for 30 minutes, after the system is stable, continuously stirring for 2 hours to obtain the finished product.