Exxonmobil Research and Engineering Company

Paul Simon Woolley

Jason Zhisheng Gao

Christopher J May

Jeffrey Robert Torkelson

Mahmoud Mostafa Hafez

Hiroki Kurosawa

Ulrich Witten

This invention relates to a lubricating oil composition comprising a base stock and an antioxidant comprising an oil soluble trinuclear organomolybdenum compound of the generic formula: Mo S &mdash;(Q) (1) wherein x is from 4 to 10 and Q is a core group, which may be a ligand, and at least one other compound selected from a phenolic and an aminic compound wherein the basestock has a kinematic viscosity at 100&deg; C. (KV ) from about 2 cSt to 20 cSt (2&times;10 to 20&times;10 m /sec) and a saturates content of at least 85%. The composition has a high oxidation stability, reduced deposit formation and is capable of giving rise to good fuel economy improvement.

Lubricating oil compositions

A binary two phase engine oil composition having two substantially immiscible liquid phases exhibits improved fuel economy which is maintained over an extended period. The first liquid phase comprises a base oil, natural or synthetic. The second liquid phase is a polar organic liquid, preferably a complex alcohol ester, preferably derived from a polyol, a polybasic acid, and a monohydric alcohol.

Lubrication system for internal combustion engines (law952)

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Morecambe, United Kingdom

Paul Simon Woolley