What Does Frothy Power Steering Fluid Mean?

Power steering fluid is a hydraulic fluid issued in the steering fluid to create a hydraulic link between the steering wheel and the front wheel. That decreases the amount of effort required to turn the wheel. Powering steering fluid also lubricates the moving part within the steering fluid. It suppresses foaming and prevents corrosion in the power steering gear and steering pump which keeps the vehicle working properly. Steering is the essential activity that controls the vehicle, so it should function properly.

The most common color of steering fluid is red or pink. In case the color change into black or dark brown or foamy, you have to change the fluid. The steering fluid has been changed within every 5 years or 500000 miles. In general, the steering wheel show different problematic sign but majorly the frothy power steering fluid is common. Forthy of the fluid occurs in the reservoir tank.

What Causes Frothy Power Steering Fluid?

The problem is the power steering system may simply be a pocket trapped in the power steering tank. So, in this article, we will discuss the information about what causes frothy power steering fluid. See the information below

1. Insufficient Power Steering Fluid

The first cause of frothy power steering fluid can be insufficient power steering fluid. Due to this the power steering pump cannot pump the power steering fluid. Thus an empty air is mixed with the fluid that enters into the power steering pump. As a result the air and fluid blend and producing foam in the power steering fluid.

Foam in the power steering fluid will flow into the power steering rack and cause problems for the car’s power steering that makes the steering wheel stiff.

2. Air Leak In The Power Steering System

The next cause can be the air leak in the power steering system. In this case, air enters and flow into the power steering hydraulic lines. The air leak can occur in the pump section especially in the o ring and pump seal, connecting the power steering hose to the power steering rack.

Air leaks that occur are often indicated by the seepage of power steering fluid in the leaking area, The power steering fluid comes out and replaces with incoming air. This causes the power steering result in forming the foaming and air bubble.

3. Power Steering Fluid Specification Is Incorrect

The last can be due to the power steering fluid specification is incorrect. If you use the power steering fluid that does not match the specification, it can disrupt the power steering working process. In case the power steering fluid is too thin, the power steering work will become stiff and heavy. If the power steering fluid is too runny, it will cause the fluid to become frothy. Because the power steering becomes hot and evaporation the power steering channel.

Thus, always use the power steering fluid which compiles with the power steering system of your car to prevent any other problem.

How To Remove The Frothy From The Power Steering Pump?

Inspection of the system is essential to find the cause of foaming. It is the entry of air that is disturbing the course, but you should find the entry point so that the part alone can be replaced. The following are a few car maintenance tips on frothy power steering fluid from the service manual to the miracle of the internet. See the information below.

  • Make sure the engine is off and cool.
  • Remove the power steering reservoir cap and check the power steering fluid level.

  • Add much fluid as needed to fill it.
  •  Replace the cap.
  • Locate the power steering bleed valve on the steering box. In case you have any difficulty finding it, just follow the high-pressure line from the power steering pump to the other end which will be in the power steering box.

  • Push a hose on the end of the bleeding valve. The hose should be long enough to reach outside the front of the car.

  • Place the drain pan on the floor in front of the car and place the other end on the hose of it.
  • Turn on the engine.
  • Loosen the bleed valve slowly.
  • Turn the steering valve left as much as you can.
  • Shut the engine.

  • Close the bleed valve.
  • Add power steering fluid to the reservoir until it’s full.
  • Check the fluid that comes out into the drain pan. You will notice that the air bubble will be coming out.
  • You have to repeat the step until the fluid in the pan is bubble-free. When there is no bubble in the fluid you will know that the system is fine.

How Much Its Cost For A Repair?

The cost for the repair and replacement of the power steering system depends upon the condition of the steering system. In case the problem is solved in the initial stage, it will cost very less amount. And if the issue is in the worst condition, the cost will be at the higher end. In case you go for repairing to the mechanics, they will take a huge amount of labor cost. So, we suggest by following the above steps fix the issue by yourself.


If the usual effortless power steering experience has become noisier and more laborious, then there could be some air in there. This sound will get louder during power steering-intensive movements such as parallel parking. The first thing to check when the power steering starts moaning and groaning is the fluid level.

In case the topping off the fluid calms down the noise and returns power steering operation to normal, then all is well. If the groaning returns a short time later along with fluid gone missing, suspect a leak as both the reason for the fluid vanishing act and air entering the system.

So always check your power steering fluid within the time so that you can notice whether there is any issue or not. In case you have a problem such as frothing, immediately replace the fluid which can compile with your vehicle to prevent properly.

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