Chevron Oronite Company LLC

Chevron Research & Technology Company

Susanne G Ruelas

Stephen Roby

Curtis Bay Campbell

Robert H Wollenberg

Richard J Nelson

John McDonald

Stephen H Roby

Kathryn E Matera

A lubricating oil composition comprising (a) a major amount of a base oil of lubricating viscosity and (b) a minor deposit-inhibiting effective amount of a reaction product prepared by transesterifying at least one glycerol ester and at least one non-glycerol polyol ester is provided. Methods for its use are also provided.

Engine oil compositions

A lubricating base oil composition is provided comprising (a) at least one Fischer-Tropsch derived lubricating base oil characterized as having a kinematic viscosity of about 2 to about 5 centistoke (cSt) at 100&#xb0; C.; and (b) at least one polyol ester. Methods for improving the fuel economy of an internal combustion engine are also provided.

Lubricating base oil compositions and methods for improving fuel economy in an internal combustion engine using same

This invention is directed to neutral and low overbased alkylphenoxy sulfonates having a dialkyl content sufficient to provide an essentially neutral alkylphenoxy sulfonate having a viscosity no greater than about 1000 cSt at a temperature of 100.degree. C. in the presence of 40 weight percent diluent oil.

Neutral and low overbased alkylphenoxy sulfonate additive compositions

This invention is directed to neutral and low overbased alkylphenoxy sulfonates derived from alkylphenols prepared by alkylating phenol with an acidic alkylation catalyst having a Hammett (H.sub.o) acidity function of about -2.3 or less (more negative).

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San Pablo, CA, United States of America

Susanne G Ruelas