Why do some cars use ATF for power steering fluid?
Many modern cars use automatic transmission fluid (ATF) as the power steering fluid, rather than a dedicated power steering fluid. This is because ATF has the right properties to effectively lubricate and operate the power steering system.
What is Power Steering Fluid?
Power steering fluid is a specialized hydraulic fluid used in the power steering system of a vehicle. The power steering system uses fluid pressure to assist the driver in turning the steering wheel, making it easier to steer the car. The fluid needs to have the right viscosity, lubrication, and anti-wear properties to work effectively in the power steering pump, hoses, and other components.
Why Use ATF for Power Steering?
- Compatibility: ATF is designed to be compatible with the seals, hoses, and other materials used in automatic transmissions, which have similar requirements to power steering systems.
- Viscosity: ATF has the appropriate viscosity range to provide the necessary lubrication and flow characteristics for power steering systems.
- Additives: ATF contains additives like anti-wear agents, corrosion inhibitors, and detergents that help protect the power steering components.li>
- Cost-Effectiveness: Using ATF can be more cost-effective for automakers than developing a dedicated power steering fluid.
By using ATF, automakers can simplify the maintenance requirements for vehicle owners and reduce the number of different fluids needed.
Considerations for Using ATF
While ATF is commonly used for power steering, it's important to follow the manufacturer's recommendations for the specific fluid type and change intervals. Using the wrong fluid or not changing it as recommended can lead to premature wear or damage to the power steering system.
In some cases, a vehicle may require a dedicated power steering fluid, especially in older models or high-performance applications. It's always best to consult the owner's manual or speak with a qualified mechanic to ensure the proper fluid is used.
