Nippon Oil Corporation

Toru Aoki

Shinichi Shirahama

Naozumi Arimoto

Hydraulic oil compositions for shock absorbers comprises a lubricating base oil and at least one type of silicone oil selected from the group consisting of silicone oils with a kinematic viscosity at 25&#xb0; C. of 10,000 to 350,000 mm/s and fluorine-modified silicone oils with a kinematic viscosity at 25&#xb0; C. of less than 10,000 mm/s. The compositions may further comprise a viscosity index improver. The compositions can enhance the damping force and initial damping properties of a shock absorber and thus improve the ride comfort of an automobile equipped with such a shock absorber.

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Yokohama, Japan

Toru Aoki