Exxon Chemical Patents, Inc.

Infineum USA LP

Thomas R Bidwell

Malcolm Waddoups

Rolfe J Hartley

Alexander B Boffa

Joe R Noles, Jr

Taisuke Miyoshi

Ian A W Bell

Gordon R Farnsworth

A lubricating oil composition exhibiting improved low temperature anti-wear performance and improved fuel economy and fuel economy retention properties, which comprises: (a) an oil of lubricating viscosity; (b) at least one calcium detergent; (c) at least one oil soluble molybdenum compound; (d) at least one nitrogen containing friction modifier; and (e) at least one zinc dihydrocarbyldithiophosphate compound, wherein the composition has a NOACK volatility of about 15.5 wt. % or less and contains from about 0.058 to 0.58 wt. % calcium from the calcium detergent, molybdenum in an amount up to about 350 ppm from a molybdenum compound, and phosphorus in an amount up to about 0.1 wt. % from a zinc dihydrocarbyldithiophosphate compound.

Lubricating oil composition

A lubricating oil composition is disclosed comprising at least 10% by weight of the total oil composition of an ester of phthalic acid having a viscosity index less than 100. The lubricating oil composition has improved fuel economy and wear performance.

Oil compositions with synthetic base oils

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Delaware, OH, United States of America

Thomas R Bidwell