Bimodal gear lubricant formulation
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United States of America Patent
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Issued Date -
Sep 30, 2004
app pub date -
Mar 25, 2003
filing date -
Mar 25, 2003
priority date (Note) -
Abandoned
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Abstract
The present invention provides a hypoid axle bimodal gear lubricant formulation comprising: (a) a base oil of lubricating viscosity, (b) at least one viscosity index improver, (c) a friction modifier, and (d) an antiwear additive; wherein said bimodal gear lubricant formulation produces a gel permeation chromatogram having at least a first peak representative of the base oil and at least a second peak representative of the viscosity index improver, and wherein said base oil has a viscosity at 100.degree. C. in the range of from about 2 centistokes to about 8 centistokes, and wherein said undilute viscosity index improver has a viscosity in the range of from about 600 centistokes to about 45,00 centistokes.
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