Lubricating oil compositions for motorcycles

Abstract

Disclosed is a MoDTC-free lubricating oil composition for motorcycles which comprises an engine and a clutch, wherein the composition comprises: an oil of lubricating viscosity, a molybdenum compound, and a salicylate detergent having a TBN 100-450 on active basis, wherein the composition lubricates the engine but not the clutch. Also disclosed is a method for lubricating the engine of a motorcycle, which comprises an engine and a clutch, with a MoDTC-free lubricating oil composition, wherein the composition comprises: an oil of lubricating viscosity, a molybdenum compound, and a salicylate detergent having a TBN 100-450 on active basis, and wherein the composition lubricates the engine but not the clutch.

1 . A MoDTC-free lubricating oil composition for motorcycles which comprises an engine and a clutch, wherein the composition comprises:
 a. a major amount of an oil of lubricating viscosity,   b. a molybdenum compound, and   c. a salicylate detergent having a TBN 100-450 on active basis, in an amount of from 2.8 to 5.8 wt. %,   wherein the ratio of component (c) to (b) is from 2.8 to 7.5, and   wherein the salicylate detergent is derived from C 14-18  normal alpha olefins.   
     
     
         2 . The lubricating oil composition of  claim 1 , wherein the molybdenum compound is a molybdenum succinimide. 
     
     
         3 . The lubricating oil composition of  claim 1 , wherein the salicylate detergent has a TBN of 150-450. 
     
     
         4 . The lubricating oil composition of  claim 1 , wherein the salicylate detergent has a TBN of 200-400. 
     
     
         5 . The lubricating oil composition of  claim 1 , wherein the salicylate detergent has a TBN of 250-400. 
     
     
         6 . The lubricating oil composition of  claim 1 , wherein the salicylate detergent has a TBN of 250-350. 
     
     
         7 . (canceled) 
     
     
         8 . The lubricating oil composition of  claim 1 , wherein the composition satisfies the system friction performance for JASO MB in the JASO T903.2011 test. 
     
     
         9 . (canceled) 
     
     
         10 . A method for lubricating the engine of a motorcycle which comprises an engine and a clutch, with a MoDTC-free lubricating oil composition, wherein the composition comprises:
 a. a major amount of an oil of lubricating viscosity,   b. a molybdenum compound, and   c. a salicylate detergent having a TBN 100-450 on active basis, in an amount of from 2.8 to 5.8 wt. %,   wherein the ratio of component (c) to (b) is from 2.8 to 7.5,   wherein the composition lubricates the engine but not the clutch, and   wherein the the salicylate detergent is derived from C 14-18  normal alpha olefins.   
     
     
         11 . The method of  claim 10 , wherein the molybdenum compound is a molybdenum succinimide. 
     
     
         12 . The method of  claim 10 , wherein the salicylate detergent has a TBN 150-450. 
     
     
         13 . The method of  claim 10 , wherein the salicylate detergent has a TBN 200-400 
     
     
         14 . The method of  claim 10 , wherein the salicylate detergent has a TBN 250-400. 
     
     
         15 . The method of  claim 10 , wherein the salicylate detergent has a TBN 250-350. 
     
     
         16 . (canceled) 
     
     
         17 . The method of  claim 10 , wherein the clutch is a dry clutch. 
     
     
         18 . A motorcycle having an engine, a clutch, and a MoDTC-free lubricating oil composition, wherein the composition comprises:
 a. a major amount of an oil of lubricating viscosity,   b. a molybdenum compound, and   c. a salicylate detergent having a TBN 100-450 on active basis, in an amount of from 2.8 to 5.8 wt. %,
 wherein the ratio of component (c) to (b) is from 2.8 to 7.5, and 
 wherein the composition lubricates the engine but not the clutch. 
   
     
     
         19 . The motorcycle of  claim 18 , wherein the clutch is a dry clutch.