▎ 摘　　要

NOVELTY - Lubricant comprises 30-50 pts. wt. composite base oil, 10-20 pts. wt. sulfurized whale oil, 2-10 pts. wt. thiol modified graphene, 5-20 pts. wt. polytetrafluoroethylene particles, 2-5 pts. wt. 2,6-di-tert.-butyl-p-cresol, 5-15 pts. wt. zinc naphthenate, 1-3 pts. wt. polyisobutene and 1-12 pts. wt. monoethanolamine. USE - Lubricant for locomotive transmission chain (claimed). ADVANTAGE - The lubricant is prepared in a simple, eco-friendly and cost-effective manner. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a method for preparing lubricant, which involves using composite base oil, sulfurized whale oil, thiol modified graphene, polytetrafluoroethylene particles, 2,6-di-tert.-butyl-p-cresol, zinc naphthenate, polyisobutene and monoethanolamine.