▎ 摘　　要

NOVELTY - A lubricating oil additive based on surface-modified graphene oxide of nitrogen-containing compound comprises 0.01-0.9 %mass lubricant oil and surface-modified graphene oxide of nitrogen-containing compound with thickness of 0.17-1.4 nm and diameter of 10-1000 nm. USE - Lubricating oil additive based on surface-modified graphene oxide of nitrogen-containing compound for vehicles. ADVANTAGE - The additive has excellent dispersibility and high repetition rate, and can effectively increases the anti-friction properties of lubricating oil and reduces the loss of engine. The additive is prepared industrially by a simple method.