▎ 摘　　要

NOVELTY - Lubricating oil or grease comprises a lubricating oil or grease main component and a sulfonated graphene with long carbon chain. USE - As lubricating oil or grease. ADVANTAGE - The lubricating oil or grease significantly improve the long-term dispersion stability and the dispersion stability of complex environments, has improved anti-wear, anti-friction properties and friction coefficient, reduces the diameter of wear scars, and reduces the wear of copper and iron. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a method for preparing the lubricating oil or grease, involving (i) dispersing the sulfonated graphene in a base oil to make graphene additive, and (ii) mixing the graphene additive with the lubricating oil or grease main component, stirring, and dispersing to obtain the product.