Oil power steering
In its basic form, your power steering system has a pump which is powered by your engine that pumps high pressure fluid down to your steering rack or gear. As you turn your steering wheel, this high pressure fluid assists your wheels in turning making it easier for you to turn the steering wheel. Power steering fluid is a hydraulic fluid that is used to pressurize the steering system. Your power steering system helps you turn your steering wheel more easily. Checking your power steering fluid regularly is the easiest way to maintain your power steering system.