A LUBRICANT ADDITIVE AND PROCESS FOR MANUFACTURING THE SAME

[Summary] [] ricant additive applicable integrally to all of different types of lubricants for various applications. [Means for Achieving the ] A lubricant additive adapted to be blended to a lub ricating oil, which is characterized by comprising a synthesized base oil of the polyolester type, the content of which to be contained in the lubricant a dditive is in a range of from 30.0 w/w% to 60.0 w/w%, calcium sulfonate containing cal cium carbonate formed in the calcite crystal structure, the content of which to be contained in the lubricant additive is in a range of from 5.0 w/w% to 30.0 w/w %, a poly-alpha-olefin oligomer, an anti-oxidant of the zinc dithiophosphate type, s uccinimide, an extreme pressure agent of the thiadiazole type and an anti-oxidant o f the phenol type, is provided.