What Can You Substitute for Power Steering Fluid?

Power steering fluid is crucial for the smooth functioning of your vehicle’s power steering system, aiding in the reduction of friction and ensuring effortless turning. However, there may be instances when you find yourself in need of steering Oil with no immediate access to it. In such situations, knowing about suitable alternatives can be a lifesaver. In this article, we will explore what can you substitute for power steering fluid, helping you steer clear of potential trouble on the road.

what can i use instead of power steering fluid

What Can You Substitute for Power Steering Fluid?

While there are potential substitutes for steering oil in emergencies, it is essential to understand that none are as ideal as the fluid designed for the arrangement. Here are some emergency substitutes:

1. Automatic Transmission Fluid (ATF)

One of the most commonly used substitutes for power steering fluid is Automatic Transmission Fluid. ATF possesses similar properties to steering oil and can lubricate the pump and hoses in the system effectively. However, it is crucial to consult your vehicle’s manual or a professional mechanic before using Automatic Transmission Fluid or mixing ATF and steering fluid, as certain systems may require specific types of liquid.

2. Synthetic Power Steering Fluid

Synthetic power steering fluids are manufactured with high-quality ingredients, providing enhanced performance and protection compared to conventional fluids. They can be a suitable alternative in an emergency, especially for vehicles operating under extreme conditions.

3. Dexron/Mercon

Dexron and Mercon are specific types of Automatic Transmission Fluids that can also be used as substitutes for power steering oil in many vehicles. These oils have excellent lubricating properties and stability under varying temperatures. Once again, it is imperative to consult your vehicle’s manual or a professional mechanic to ensure compatibility.

4. Hydraulic Fluid

Hydraulic fluid is designed to transfer force within hydraulic systems, and it shares similar characteristics with power steering oil. In emergencies, hydraulic oil can be used as a substitute. However, this should only be a temporary solution, and it is advisable to replace it with the appropriate oil as soon as possible.

Considerations When Using Substitutes:

  1. Compatibility: The biggest concern when using a substitute is compatibility with your car power steering system. Incompatibility can lead to reduced steering efficiency, damage to seals, and even failure.
  2. Viscosity: Steering lubricant has a specific viscosity range that ensures optimal performance. Substitutes should match this range as closely as possible to maintain turning responsiveness.
  3. Temporary vs. Permanent: If you’re in a pinch, a substitute might work temporarily. However, it’s always best to flush and refill the system with the recommended oil as soon as possible.
  4. Check Manual: Always refer to your vehicle’s manual or contact the manufacturer before using any substitute. The manual often specifies which fluids are acceptable.

Why Does Power Steering Need Fluid?

Power steering fluid plays a crucial role in a vehicle steering system, allowing drivers to steer the vehicle effortlessly. Here is a breakdown of it is essential:

1. Act as a Hydraulic Fluid: At its core, most power steering systems are hydraulic. Hydraulic systems use lube to transmit force from one point to another. When you turn the wheel, the oil conveys this movement to the steering gear, which then turns the wheels.

2. Reduce Friction: The steering systems consist of numerous moving parts, like the steering pump, valves, and pistons. The fluid ensures these components move smoothly against each other, reducing wear and preventing them from grinding together, which could lead to failure.

3. Cooling: As the power steering system operates, it can generate heat due to the constant motion and friction. The oil helps to dissipate this heat, ensuring the parts do not overheat and become damaged.

4. Protect against Wear: High-quality liquids often contain additives that protect the system. These additives can prevent rust, corrosion, and wear, ensuring a longer life for the components.

5. Sealing: The fluid helps to maintain seals and O-rings in the system, ensuring they remain flexible and don’t dry out or crack. A compromised seal can lead to leaks and reduced efficiency.

6. Lubrication: The liquid lubricates the internal components of the power steering system. Without lubrication, these parts would wear out faster, leading to more frequent repairs and replacements.

7. Transfer of Energy: The fluid acts as a medium for energy transfer. When you turn the steering wheel, it’s the lube that transmits the force to move the tires, magnifying the force you apply to make it easier to steer.

Without power steering fluid, the turning effort required by the driver would significantly increase, especially at low speeds, making it difficult to steer and maneuver the vehicle. The liquid ensures the system operates smoothly and efficiently, providing drivers with an easy and responsive experience.

How Do You Check Power Steering Fluid Level?

Checking the oil level is a straightforward process, but it is critical to follow safety precautions to prevent any accidents. Here’s a step-by-step guide:

Safety First:

  • Engine Condition: Some vehicles recommend checking the power fluid with the engine off, while others suggest checking it with the car running. Always refer to your vehicle’s manual for specific instructions.
  • Coolant: The power steering liquid reservoir and the engine’s coolant reservoir often look similar. Ensure you’re opening the correct reservoir by checking for labels or referring to the vehicle’s manual.

Checking Power Steering Fluid Level:

power steering fluid check
  1. Park & Secure the Vehicle: Park your vehicle on a level surface and turn off the engine. If your manual suggests checking with the engine running, ensure the vehicle is in “park” mode (or neutral for manual transmissions) and engage the handbrake.
  2. Open the Hood: Locate the hood release latch inside your vehicle (usually near the driver’s side footwell). Pull the latch. Once released, go to the front of the vehicle and find the secondary latch to open the hood fully. Use the hood prop rod if necessary to keep the hood open.
  3. Locate the Reservoir: Look for the power steering fluid reservoir. It is typically a white or translucent container with a black cap, labeled with “Power Steering Fluid”.
  4. Check the Fluid Level:
    • For reservoirs with dipsticks:
      1. Unscrew the reservoir cap, which often has a dipstick attached to it.
      2. Wipe the dipstick clean with a rag.
      3. Reinsert it fully and then remove it again to check the level.
      4. The dipstick will typically have two markings or areas: “Full” (or “Max”) and “Add” (or “Min”). Ensure the liquid level is between these marks.
    • For translucent reservoirs:
      1. Look at the outside of the reservoir.
      2. There will usually be two lines: a “Full” (or “Max”) line and an “Add” (or “Min”) line. Make sure the fluid is between these two lines.
  5. Check the Fluid Condition: The fluid should be clear with a slight reddish or amber hue. If it appears brownish, gloomy or has particles floating in it, it might be time for a change. Dark or burnt-smelling oil indicates contamination or potential system issues.
  6. Close Everything Up: If the oil is at the proper level and in good condition, screw the cap back onto the reservoir securely. Make sure it’s tightened properly to prevent any leaks. Finally, close the hood of the vehicle.


  • If the fluid level is below the “Add” or “Min” line, top it up with the recommended steering lube for your vehicle. Never overfill, as this can cause leaks or other issues.
  • If you’re consistently losing liquid or notice a significant drop in levels in a short period, there might be a leak in the system. Seek professional help or inspect the components for possible leaks.
  • Regularly checking the power steering fluid level and its condition can prevent potential movement issues and ensure the system longevity.

Can I Use Brake Fluid for Power Steering?

No, brake oil should not be used as a power steering fluid substitute. Both liquids have distinct formulations and serve different functions in a vehicle. Brake fluid is designed to handle the high-pressure demands of the braking system and withstand high temperatures without boiling. Steering fluid, on the other hand, is formulated to lubricate and operate within the structure. Using brake fluid in the system can lead to component damage, malfunction, and potentially costly repairs. If your vehicle requires a top-up, it’s crucial to use the correct type of oil recommended by the manufacturer.

Can Engine Oil be used as Steering Oil?

Using engine oil as a substitute for power steering fluid is not recommended. While both are lubricants, they have different properties and are designed for specific functions within a vehicle. Power steering fluid is made to operate in the high-pressure environment of the steering system and to provide optimal lubrication for its components. Engine oil, on the other hand, is designed to lubricate, clean, and cool internal engine parts. Using engine oil instead of steering oil can lead to inadequate lubrication, reduced system performance, and potential damage to the pump and other components, resulting in expensive repairs. Always use the correct type of lube specified by the vehicle manufacturer to ensure proper function and longevity.

Can I Use Water Instead of Power Steering Fluid?

No, you cannot use water as a power steering fluid alternative. Here are the reasons why:

  1. Different Properties: The fluid is specifically formulated to serve as a hydraulic fluid, lubricant, and coolant for the system. Water does not possess the necessary lubricating properties and can cause significant wear and damage to the parts.
  2. Corrosion and Rust: Water can cause rusting of metal components and corrosion of non-metallic elements within the system.
  3. Freezing and Boiling Points: Water has a higher freezing point and a lower boiling point than power steering fluid. This can lead to freezing in cold conditions or boiling and creating steam in hot conditions, which can damage the parts.
  4. Contamination: Water can introduce contaminants and microbes into the system, leading to further complications.


What can I use instead of power steering fluid? While there are possible, caution is dominant. The wrong oil can lead to costly damages and reduced driving safety. When in doubt, always consult with a professional or refer to your vehicle’s manual. The best practice is to keep some extra recommended power steering fluid on hand to avoid resorting to substitutes.


Mr. Shafiqule Islam is a graduated Mechanical Engineer and has more than 15 years experience of repairing and maintenance of different brand vehicles like Toyota, Mitsubishi, Ford, Mercedes, BMW etc. He is also giving training to Mechanics. He has started writing to share his practical knowledge to Vehicle Owners, Drivers and Mechanics to keep their cars at best fit.

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