Power Steering Fluid is a high perfromance product developed to keep vehicles fully lubricated at extreme pressures & temperatures. They give the required frictional properties, oxidation resistance & anti-wear performance, thereby protecting the components of the vehicle from damage and wear and tear. Power steering fluid is used in the car's hydraulic system to transfer the power applied to the steering wheel by the driver to the steering column. This makes driving easier and takes the pressure ff your arm muscles! Keep it at the corect level and use a quality steering fluid for full effect.