Rev Up Your Automotive Smarts

Gear Oil as Power Steering Fluid: Is It the Magic Hack or a Dangerous Mistake?

Essential Information

  • In addition to the potential problems listed above, using gear oil in a power steering system can also void the warranty on the power steering components.
  • Using gear oil in a power steering system can cause various problems and potentially void the warranty on the power steering components.
  • If you accidentally put gear oil in your power steering fluid, it’s important to flush the system and refill it with the correct power steering fluid as soon as possible.

When it comes to maintaining your vehicle, it’s essential to use the correct fluids for each component. Gear oil and power steering fluid are two different types of fluids with distinct purposes. However, some people wonder if gear oil can be used as a substitute for power steering fluid. In this blog post, we will explore the answer to this question and provide a comprehensive guide to help you make an informed decision.

Understanding Gear Oil

Gear oil is a lubricant specifically designed for transmissions and differentials. It contains additives that help reduce friction and wear between gears and bearings. Gear oil is typically thicker than power steering fluid and has a higher viscosity.

Understanding Power Steering Fluid

Power steering fluid is a hydraulic fluid used in power steering systems. It transfers hydraulic pressure from the power steering pump to the steering rack, enabling the driver to turn the steering wheel with ease. Power steering fluid is typically thinner than gear oil and has a lower viscosity.

Can Gear Oil Be Used as Power Steering Fluid?

The short answer is: No, gear oil should not be used as power steering fluid.

Gear oil and power steering fluid are not interchangeable. Gear oil is too thick and viscous for power steering systems. Using gear oil in a power steering system can cause several problems, including:

  • Reduced steering performance: The thicker gear oil will make it more difficult to turn the steering wheel, especially at low speeds.
  • Damage to the power steering pump: The high viscosity of gear oil can put excessive strain on the power steering pump, potentially leading to premature failure.
  • Leaks: The thicker gear oil may not seal properly in the power steering system, resulting in leaks.

Why Should You Not Use Gear Oil in Power Steering Fluid?

In addition to the potential problems listed above, using gear oil in a power steering system can also void the warranty on the power steering components. Vehicle manufacturers specify specific fluids for each component, and using an incorrect fluid can invalidate the warranty.

When Can You Use Gear Oil in Power Steering Fluid?

In some rare cases, it may be necessary to use gear oil in a power steering system. This is typically only done in emergency situations when there is no suitable power steering fluid available. However, it’s important to note that using gear oil in a power steering system should be considered a temporary solution. The power steering system should be flushed and refilled with the correct power steering fluid as soon as possible.

How to Choose the Right Power Steering Fluid

When choosing power steering fluid, it’s important to consult your vehicle’s owner’s manual. The manufacturer will specify the type of power steering fluid that is compatible with your vehicle. Different vehicles may require different types of power steering fluid, so it’s crucial to use the correct fluid to ensure optimal performance and longevity.

Final Thoughts

In conclusion, gear oil should not be used as a substitute for power steering fluid. Using gear oil in a power steering system can cause various problems and potentially void the warranty on the power steering components. If you need to replace your power steering fluid, it’s essential to use the correct fluid specified by the vehicle manufacturer.

Top Questions Asked

Q: Can I mix gear oil with power steering fluid?
A: No, you should not mix gear oil with power steering fluid. The two fluids have different properties and can cause problems if mixed.

Q: What happens if I accidentally put gear oil in my power steering fluid?
A: If you accidentally put gear oil in your power steering fluid, it’s important to flush the system and refill it with the correct power steering fluid as soon as possible. Continued use of gear oil can damage the power steering system.

Q: Can I use transmission fluid as power steering fluid?
A: In some cases, transmission fluid can be used as a temporary substitute for power steering fluid. However, it’s important to consult your vehicle’s owner’s manual to determine if this is an acceptable practice for your vehicle.

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About the Author
Cars have been my passion from a young age as I enjoyed learning how engines work, spending hours dreaming about the supercars I hoped to own, and I now have my dream job as a product designer for a luxury automaker. In my spare time I love going to car...