Hydraulic Fluid

(redirected from Power steering fluid)
Also found in: Medical, Acronyms.

hydraulic fluid

[hī′drȯ·lik ′flü·əd]
A low-viscosity fluid used in operating a hydraulic mechanism.

Hydraulic Fluid


a fluid used in machines and mechanisms to transmit forces. Hydraulic fluids should have a high resistance to oxidation, low frothing, inertness with respect to materials in the components of hydraulic systems, a flat viscosity curve, a low freezing point, and a high flash point. The petrochemical industry produces over 20 kinds of oils that are used in hydraulic systems (see Table 1).

Certain industrial and motor oils are utilized in a number of cases as hydraulic fluids. The majority of hydraulic fluids contain antioxidants, antifoamants, and other additives.


Nefteprodukty: Spravochnik. Edited by B. V. Losikov. Moscow, 1966.
Motornye i reaktivnye masla i zhidkosti, 4th ed. Edited by K. K. Papok and E. G. Semenido. [Moscow, 1964.]


References in periodicals archive ?
This is the first time in India that a power steering manufacturing company is diversifying into the allied product of power steering fluid bringing all the expertise of the power steering to provide a total solution to the end customer.
GM determined that a power steering fluid line could leak because of wear.
If your owner's manual lists a type of power steering fluid that's carried by your local auto parts store (like Chrysler's ATF+4 or Mercon V), buy it there.
SF105 oil (figure 18), lithium grease (figure 19), polyurea grease (figure 20) and power steering fluid (figure 21) were all chosen for screening purposes.
They were all found to be `non de-polluted', that is, containing batteries, oil, brake fluid, coolant, power steering fluid or screenwash.
These included headlights, brake lights, tyre pressures, power steering fluid and radiator levels not checked.
Automobile specialists suggest you check the engine oil level, transmission fluid, brake fluid, power steering fluid, coolant (antifreeze) level, battery, windshield washer solvent, belts and hoses, windshield wiper blades and tires periodically to prolong the life of your car.
They were running third and fifth respectively when power steering fluid boiled and sprayed on to the starter motors.
The automaker is recalling vehicles due to an overheating problem with the power steering fluid.
Use the turkey baster method to remove the old power steering fluid.
They were all found to be `non de-polluted', that is, they contained batteries, oil, brake fluid, coolant, power steering fluid or screenwash liquid.
Therban is said to provide resistance to oil and grease; resilience at temperatures from -40 [degrees] C up to 150 [degrees] C; superior performance in aggressive fluids such as power steering fluid, automatic transmission fluid, engine oils, fuels, diesel and brake fluid; and more thermally stable grades with both partial and full saturation than any other HNBR supplier, ranging from 20% ACN to 43% ACN.