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US 2010/0137176 A1Published application
Operating oil for buffer
AssigneeNippon Oil Co., Ltd.
InventorsTooru Aoki, Kazuo Tagawa, Shinichi Shirahama
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Abstract
The shock absorber fluid according to the invention is characterized by comprising a lubricating base oil that has a urea adduct value of not greater than 4% by mass and a viscosity index of 100 or greater. The shock absorber fluid according to the invention can exhibit a high level of all properties including viscosity-temperature characteristic, shear stability and antifoaming property.
Claims3
A shock absorber fluid comprising a lubricating base oil that has a urea adduct value of not greater than 4% by mass and a viscosity index of 100 or greater.
Dependencies are inferred from the claim text.