hydraulic oil

Machine power liquid

Hydraulic oil is a fluid used in hydraulic systems to transmit power, lubricate components, and transfer heat.

It flows through pumps, cylinders, and valves to convert mechanical energy into force—lifting excavator arms, operating brakes, or powering industrial presses.

Different formulations suit different temperatures and pressures: Check the hydraulic oil level before operating the forklift.

Opposites
functional purpose in machinery

hydraulic oilgasoline

Refined petroleum vehicle fuel

diesel fuel · petrol · compressed air · engine oil · motor oil

fluid state/medium for power transmission

hydraulic oilcompressed air

Gas under high pressure

pneumatics · electrical power · vacuum

Family

hydraulic, hydra, hydrant, hydrate, hydration, dehydrate, dehydration, hydroelectric, hydrogen

Familiarity
Top 500,000
Profile
Used worldwide · Timeless · Concrete · Rated G