Exxonmobil Research and Engineering Company

Exxonmobile Research and Engineering Company

Kathleen Hoard Tellier

Vincent Mark Carey

Kevin L Crouthamel

Marc-André Poirier

Stanley James Cartwright

The present invention is directed to a method for improving the fuel efficiency of low and medium speed engine oil compositions by reducing the traction coefficient of the oil by formulating the oil using at least two base stocks of different kinematic viscosity wherein the differences in kinematic viscosity between the base stocks is at least 30 mm/s.

Method for improving the fuel efficiency of engine oil compositions for large low and medium speed engines by reducing the traction coefficient

The present invention is directed to a method for improving the fuel efficiency of large engine oil compositions by reducing the traction coefficient of the oil by formulating the oil using at least two base stocks of different kinematic viscosity wherein the differences in kinematic viscosity between the base stocks is at least 32 mm/s, and, preferably, additizing the composition with a salicylate detergent, a mixture of salicylate-phenate detergents or a mixture of sulfonate and phenate detergents.

Method for improving the fuel efficiency of engine oil compositions for large low and medium speed gas engines by reducing the traction coefficient

The resistance to oxidation and nitration of a gas engine oil is improved by the use of a combination of a hindered phenolic antioxidant and an (alkylated) phenyl-&#x3b1;-naphthylamine antioxidant. The additional use of an organo molybdenum compound further enhances the resistance to oxidation and nitration.

Growing community of inventors

Cherry Hill, NJ, United States of America

Kathleen Hoard Tellier