Shock absorber oil composition

Abstract

A shock absorber oil composition of the invention includes a base oil: (A) at least one of phosphate, amine phosphate salt, phosphite and amine phosphite salt; (B) an amide compound; and (C) an N-substituted derivative of sarcosine.

1 . A shock absorber oil composition, comprising:
 a base oil;   a component (A) which is at least one selected from the group consisting of phosphate, amine phosphate salt, phosphite and amine phosphite salt;   a component (B) which is an amide compound; and   a component (C) which is an N-substituted derivative of sarcosine.   
     
     
         2 . The composition according to  claim 1 , wherein
 the component (A) has an alkyl group or an alkenyl group, and   the alkyl group or the alkenyl group has 12 to 20 carbon atoms.   
     
     
         3 . The composition according to  claim 1 , wherein
 the component (B) has an alkyl group, and   the alkyl group has 12 to 20 carbon atoms.   
     
     
         4 . The composition according to  claim 1 , wherein
 the N-substituent in the component (C) has 12 to 20 carbon atoms.   
     
     
         5 . The composition according to  claim 1 , wherein, based on a total amount of the composition,
 a content of the component (A) is from 0.1 mass % to 1 mass %,   a content of the component (B) is from 0.1 mass % to 1 mass %, and   a content of the component (C) is from 0.1 mass % to 1 mass %.