Chevron U.s.a. Inc.

Trevor Miller

Stephen Joseph Miller

John Michael Rosenbaum

Nancy J Bertrand

John A Zakarian

Ajit Ramchandra Pradhan

Michael J Haire

Allan G Hee

Vivek Palekar

A gear oil composition is provided. The composition comprises a synergistic amount of an isomerized base oil having consecutive numbers of carbon atoms and less than 10 wt % naphthenic carbon by n-d-M for the gear oil composition to have a traction coefficient at 15 mm/s. of less than 0.030 and a pressure viscosity coefficient of at least 15.0 at 80&#xb0; C., 20 Newton load, and 1.1 m/s rolling speed. In one embodiment, the sufficient amount of isomerized base oil ranges from 20 to 80 wt. % based on the total weight of the gear oil composition.

Gear oil compositions, methods of making and using thereof

A multigrade automotive gear lubricant comprising a base oil having a traction coefficient less than 0.021. A method for saving energy using a gear lubricant, comprising blending a multigrade gear lubricant by adding a base oil having a traction coefficient less than 0.021, and using the gear lubricant in an axle or differential. A process for making an energy saving automotive gear lubricant having a kinematic viscosity at 100&#xb0; C. greater than 10 cSt. A gear lubricant comprising a FT derived base oil having a VI greater than 150 and a traction coefficient less than 0.015. A finished lubricant, comprising a FT derived base oil having a traction coefficient less than 0.015. A base oil having a traction coefficient less than 0.011 and a 50 wt % boiling point greater than 582&#xb0; C.

Gear lubricant with a base oil having a low traction coefficient

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Oakland, CA, United States of America

Trevor Miller