What is automotive power steering fluid?

1 Answers
KeeganLynn
07/30/25 7:05am
Automotive power steering fluid, also known as steering assist fluid or power steering oil, is a specialized lubricant used in power steering systems to assist with steering. In English, it is referred to as Power-Steering-Fluid. This hydraulic fluid is specifically designed for power steering pumps and works through hydraulic pressure to make steering lighter or electronically adjust the damping of the steering fluid. It shares similarities with automatic transmission fluid and brake fluid. More details are as follows: 1. Power steering is a comfort-enhancing technology in vehicles that provides assistance during steering, reducing the physical effort required from the driver. The power steering fluid serves as a medium within this system, transmitting steering force and providing cushioning. 2. Different vehicle models require different types of power steering fluid, so it's best to follow the specifications in the vehicle's manual. Additionally, automatic transmission fluid can sometimes be used as a substitute for power steering fluid. 3. When power steering fluid is used for an extended period without replacement, the steering wheel may become noticeably heavier under normal driving conditions, affecting the driving experience. For intense driving scenarios like racing, it's advisable to install a power steering fluid cooler, as overheating can reduce the system's assist function, compromising handling and potentially leading to hazardous situations.
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