Chevron U.s.a. Inc.

Chevron Oronite Company LLC

James A McGeehan

Richard E Cherpeck

Kenneth Dale Nelson

Alexander B Boffa

William M Kleiser

Stephen D Stults

Wim Van Dam

A lubricating oil composition having a sulfur content of up to about 0.4 wt. % and a sulfated ash content of up to about 0.5 wt. % as determined by ASTM D874 is disclosed which comprises (a) a major amount of an oil of lubricating viscosity; (b) at least one oil-soluble or dispersed oil-stable boron-containing compound having greater than 400 ppm of boron, based upon the total mass of the composition; and (c) at least one oil-soluble or dispersed oil-stable molybdenum-containing compound having at least about 1100 ppm of molybdenum, based upon the total mass of the composition; wherein the lubricating oil composition has a ratio of sulfur to molybdenum of less than or equal to about 4:1.

Lubricating oil compositons

A lubricating oil composition having a sulfur content of up to about 0.4 wt. % and a sulfated ash content of up to about 0.5 wt. % as determined by ASTM D874 is disclosed which comprises (a) a major amount of an oil of lubricating viscosity; (b) at least one oil-soluble or dispersed oil-stable boron-containing compound having no more than about 400 ppm of boron; and (c) at least one oil-soluble or dispersed oil-stable molybdenum-containing compound having at least about 1100 ppm of molybdenum, based upon the total mass of the composition; wherein the lubricating oil composition has a ratio of sulfur to molybdenum of less than or equal to about 4:1.

Lubricating oil composition

A lubricating oil composition having a sulfur content of up to about 0.4 wt. % and a sulfated ash content of up to about 0.5 wt. % as determined by ASTM D874 is disclosed which comprises (a) a major amount of an oil of lubricating viscosity; (b) at least one oil-soluble or dispersed oil-stable boron-containing compound having no more than about 600 ppm of boron, based upon the total mass of the composition; and (c) at least one oil-soluble or dispersed oil-stable molybdenum-containing compound having no more than about 800 ppm of molybdenum, based upon the total mass of the composition; wherein the lubricating oil composition has a ratio of sulfur to molybdenum of about 5:1 to about 500:1.

Lubricating oil compositions

A lubricant composition includes a base oil having a consecutive number of carbon atoms and a viscosity index greater than a Viscosity Index Factor calculated by the following equation:28&#xd7;(Kinematic Viscosity at 100&#xb0; C.)+95.The lubricant composition also includes greater than 15 weight % detergent inhibitor (DI) additive package. The lubricant composition has a dynamic viscosity at &#x2212;35&#xb0; C. of less than 6200 mPa&#xb7;s, a Mini-Rotary Viscosity (MRV) at &#x2212;40&#xb0; C. of less than 60,000 mPa&#xb7;s, and a Cold Cranking Simulator (CCS) Viscosity at &#x2212;35&#xb0; C. of less than 6200 mPa&#xb7;s.

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San Rafael, CA, United States of America

James A McGeehan