What type of fluid is typically used in a vehicle's power steering system?

The type of fluid typically used in a vehicle's power steering system is specifically formulated power steering fluid. This fluid is designed to provide the proper lubrication, hydraulic assistance, and protection necessary for the components of the power steering system to function effectively. It has properties that help reduce friction and wear, ensures a stable operating temperature, and maintains fluid stability under varying conditions.

Using the correct power steering fluid is crucial because it often includes additives that prevent foaming, oxidation, and the breakdown of the fluid over time. Each vehicle may require a specific type of power steering fluid based on the manufacturer’s recommendations, making it important to use the fluid designated for a particular make and model to avoid potential damage to the system.

In contrast, other fluids such as transmission fluid and engine oil do not have the same properties suitable for power steering systems and may lead to performance issues or system damage. Brake fluid is also unsuitable since it is designed for a completely different function in the braking system.