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US 2020/0369978 A1Published application
Boron containing automotive gear oil
AssigneeThe Lubrizol Corporation
InventorTomoya Higuchi
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Abstract
The disclosed technology relates to an automotive gear oil, which may be used, for example, in heavy duty manual transmissions and axles, and includes an oil of lubricating viscosity, 1 wt % or less of a dispersant, and at least one boron containing compound.
Claims15
An automotive gear oil for lubricating an automotive gear comprising
- a. an oil of lubricating viscosity
- b. 0.025 to 0.9 wt. % of a succinimide dispersant, and
- c. about 0.2 to 2.0 wt. % of at least one boron-containing compound in an amount sufficient to provide from about 75 ppm to about 500 ppm of boron to the automotive gear oil, wherein that at least one boron-containing compound is a borate ester of formula I,
- wherein each R, independently, is a C3 to C12 alkyl, and
- d. 0.01 wt % to 0.5 wt % of a dimercaptothiadiazole or derivative thereof.
2 more elements
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Dependencies are inferred from the claim text.