Lubricating oil composition

Abstract

A lubricating oil composition includes: a lubricating base oil; and an imide compound, an amide compound and an aliphatic amine compound mixed with the lubricating base oil. A content of the imide compound is 300 to 1000 ppm by mass of the total amount of the composition in terms of nitrogen. A content of the amide compound is 380 to 1300 ppm by mass of the total amount of the composition in terms of nitrogen. A content of the aliphatic amine compound is 35 to 360 ppm by mass of the total amount of the composition in terms of nitrogen.

1 . A lubricating oil composition comprising: a lubricating base oil; and an imide compound, an amide compound and an aliphatic amine compound mixed with the lubricating base oil, wherein
 a nitrogen content of the imide compound is 300 to 1000 ppm by mass of a total amount of the composition;   a nitrogen content of the amide compound is 380 to 1300 ppm by mass of the total amount of the composition; and   a nitrogen content of the aliphatic amine compound is 35 to 360 ppm by mass of the total amount of the composition.   
   
   
       2 . The lubricating oil composition according to  claim 1 , wherein
 the contents of the imide compound, the amide compound and the aliphatic amine compound amount to 1000 to 2000 ppm by mass of the total amount of the composition in terms of nitrogen.   
   
   
       3 . The lubricating oil composition according to  claim 1 , wherein the imide compound is a succinimide compound. 
   
   
       4 . The lubricating oil composition according to  claim 1 , wherein a multistage transmission or a continuously variable transmission comprises the lubricating oil composition. 
   
   
       5 . The lubricating oil composition according to  claim 4 , wherein the continuously variable transmission is a belt-type continuously variable transmission equipped with a metallic belt.