Lubricating compositions comprising a volatility reducing additive

Abstract

A lubricating composition is provided comprising: (i) a base oil; and (ii) a volatility reducing additive; wherein the composition has a kinematic viscosity at 100° C. (according to ASTM D445) of 16.3 mm2/s or less, a low temperature cranking viscosity of at most 6200 cP at −35° C. (ASTM D5293) and a NOACK volatility of at most 15% according to ASTM D5800B.

1 . A lubricating composition comprising:
 (i) a base oil;   (ii) volatility reducing additives;   wherein the volatility reducing additives comprises a molybdenum based friction modifier and an aminic antioxidant; and   wherein the composition has a kinematic viscosity at 100° C. (according to ASTM D445) of 16.3 mm2/s or less, a low temperature cranking viscosity of at most 6200 cP at −35° C. (ASTM D5293) and a NOACK volatility of at most 15% according to ASTM D5800B.   
     
     
         2 . The lubricating composition according to  claim 1 , wherein the composition has a NOACK volatility of at most 12.5% according to ASTM D5800B. 
     
     
         3 . The lubricating composition according to  claim 1 , wherein the molybdenum based friction modifier is present in the range of from 0.5 wt. % to 5 wt. % with respect to the total weight of the lubricating composition. 
     
     
         4 . The lubricating composition according to  claim 1 , wherein the an aminic antioxidant is present in the range of from 0.5 wt. % to 5 wt. % with respect to the total weight of the lubricating composition. 
     
     
         5 . The lubricating composition according to  claim 1 , wherein the base oil comprises one or more Fischer-Tropsch derived base oils. 
     
     
         6 . The lubricating composition according to  claim 5 , wherein the base oil comprises 80% or greater of one or more Fischer-Tropsch derived base oils, by weight of the base oil.