Brake Fluid In Power Steering To Stop Leak?

The topic of using brake fluid in power steering to stop leak is a controversial one. While some argue that it can be an effective solution to address leaks, others warn of the potential dangers and damage it can cause.

In this article, we will take a closer look at the use of brake fluid in power steering systems, explaining their differences, and providing alternative solutions to address power steering leaks. Whether you are a car owner, mechanic, or just curious about the topic, this article will provide you with the information you need to make an informed decision about using brake fluid in power steering systems.

brake fluid in power steering to stop leak

Can you put brake fluid in power steering to stop leak?

Brake fluid and power steering fluid are two different types of lubricants used in different vehicle systems. Brake fluid is used in the brake system to transfer the force from the brake pedal to the brake pads and stop the vehicle.

Power steering fluid is used in the power steering system to help the driver turn the wheels more easily.

Using brake fluid in the power steering system is not recommended, as the two types of fluids have different properties, and adding brake fluid to power steering fluid could cause damage to the power steering system.

Brake fluid is not designed to stop leaks in the power steering system, which is a common problem. Using a power steering stop leak is a better solution.

Some folks say that adding brake fluid to the steering fluid will swell the seals in the steering system. According to them, swelling the seals will stop the system leak. While this is true to an extent, it is essential to note that it can cause severe damage to the steering system components.

Likewise, brake fluid contaminated with power steering fluid will cause the seals to start swelling. If you suspect a leak in your brake or power steering system, it’s essential to have it inspected by a qualified mechanic, as leaks can be caused by various issues and can lead to severe damage if left untreated.

What can be used to stop steering leaks?

You can use several ways to stop steering leaks, depending on the source of the leak.

Replace worn or damaged seals

The best way of stopping steering leaks is to diagnose the system and replace damaged components.  Worn or damaged seals are common sources of leaks in steering systems and can often be easily replaced with new parts. If there are damaged or worn seals, replace them to address the issue.

Use steering stop leak

Using a sealant specifically designed for use in steering systems is another way of stopping steering leaks. These products can be added to the power steering fluid and provide a temporary or permanent fix, depending on the severity of the leak.

Replace defective or damaged components

Steering system components can fail over time and cause system leaks. If this is the root cause, the best solution is to replace any damaged or worn components in the steering system, such as the steering rack or pump and defective steering hose.

Bleed the steering

Let’s get this straight. Trapped air in the steering system does not cause steering fluid leaks, but it can cause the system to become foamy and eventually leak from the reservoir cup. Bleeding the system can help remove any trapped air, improve the system’s overall performance, and stop the foam.

It’s important to note that it’s essential to determine the cause of the leak before attempting to fix it, as using the wrong method or product can worsen the problem. Consult with a professional mechanic if you need more clarification.

Can you add brake fluid to the power steering pump?

As explained earlier, brake and power steering fluids are two different types of fluids used in different vehicle parts. Brake fluid is used in the brake system, while power steering fluid is used in the power steering system.

If you are asking, can you add brake fluid to power steering? The answer is yes. However, you can doesn’t mean you should. Adding brake fluid to stop power steering leak is not recommended as it can damage the system and cause steering failure.

If you suspect your power steering pump is low on fluid, consult your vehicle’s owner’s manual or a mechanic to determine the proper type of fluid to use and the procedure for adding it. It’s essential to use the correct fluid in the right system.

Differences between brake fluid and power steering fluid

Brake fluid and power steering fluid are vital fluids used in vehicles, but they serve different purposes and have different characteristics.

Brake fluid is a type of hydraulic fluid used in a vehicle’s brake system to transfer the force applied to the brake pedal to the brake pads, which then press against the rotor or drum to slow or stop the vehicle. It is typically made of a glycol-based liquid and is designed to withstand high temperatures and pressures.

Over time, brake fluid can become contaminated with moisture and other impurities, reducing its effectiveness and leading to brake failure. For this reason, it is important to have the brake fluid checked and replaced periodically.

Power steering fluid, on the other hand, is used in the power steering system of a vehicle to assist the driver in turning the wheels. It is typically made of a mineral oil-based liquid and is designed to lubricate the components of the power steering system and protect against wear. 

power steering fluid

It is also designed to withstand high temperatures and pressures, but typically not as much as brake fluid. The power steering fluid level should be checked regularly and changed if it becomes dirty or contaminated.

Does steering fluid leak work?

Steering fluid stop leak products are designed to seal small leaks in the power steering system. However, their effectiveness can vary depending on the cause and location of the leak.

In some cases, these products may temporarily seal a leak and improve the performance of the power steering system. Prestone power steering fluid stop leak is a quality product you should try. Also, t you should try several brake fluid stop leak when the brake system starts leaking. BlueDevil is a reputable name for stop leaks for brakes, steering, and engine coolant. You can get one of their stop leaks product.

However, they are not a permanent solution, and a professional should still repair the underlying issue causing the leak to prevent further damage or failure of the power steering system. It’s recommended to check with a mechanic or consult the vehicle’s manual to see if the product is compatible with your vehicle before using it.

Final word

You’ll no longer ask, can I put brake fluid in power steering to stop leak? It is not recommended to use brake fluid as a solution to stop a power steering leak. Brake fluid and power steering fluid have different properties, and using the wrong type of fluid can damage the power steering system.

Identifying the type of fluid needed for your vehicle and having any leaks or issues with the power steering system professionally addressed is crucial. Using the proper fluid and addressing any leaks or issues will help ensure the proper function and longevity of your vehicle’s power steering system.


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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