油ゆ圧あつ作さ動どう油ゆ

noun

hydraulic oil; hydraulic fluid

Technical term used in engineering and machinery contexts.

• 油ゆ圧あつ作さ動どう油ゆの交こう換かん時じ期きを確かく認にんしてください。

  Please check the replacement interval for the hydraulic fluid.