▎ 摘　　要

NOVELTY - A graphene-modified lubricating oil comprises 80-90 pts. wt. base oil, 0.5-1.2 pts. wt. dispersant, 0.8-2 pts. wt. defoaming agent, 0.5-1.2 pts. wt. modified graphene and 2-4 pts. wt. antioxidant. Also, claimed is the preparation, which involves preparing base oil, dispersant, defoaming agent, modified graphene and antioxidant, adding defoaming agent, modified graphene and antioxidant into base oil, adding half the weight of dispersant, stirring the mixture for 1 hour, adding remaining dispersant into the mixture, ultrasonically stirring for 0.5 hour, and mechanically stirring for 0.5 hour. USE - Graphene-modified lubricating oil. ADVANTAGE - The method ensures better stirring effect while stirring through mechanical and ultrasonic stirrer, and ensures excellent cleaning and dispersibility by dispersing the modified graphene into the base oil and adding the dispersant twice.