| abstract |
The present invention provides a lubricating oil composition and a grease composition that have a good balance between low friction, wear resistance, and heat resistance. An organomolybdenum compound having a sulfur atom, a phosphorus atom, a nitrogen atom and a molybdenum atom in one molecule and having a solubility in water, ethanol, toluene, chloroform and methyl isobutyl ketone, all less than 1% And an organic molybdenum-based lubricating oil composition comprising a lubricating base oil. In this lubricating oil composition, the molybdenum atom content in the organic molybdenum compound is 8 to 35 mass%, the sulfur atom content is 2 to 17 mass%, the phosphorus atom content is 0.2 to 3 mass%, and nitrogen. The atomic content is 1 to 10% by mass. Further, a grease composition is obtained by further adding a base grease. [Selection figure] None |