Power Steering Reservoir

The power steering reservoir is a plastic or metal container that receives power steering fluid directly from a refill. It directs this fluid from the power cylinder to the pump. It comes in different shapes and sizes. It features a cover cap and two lower outlets for the fluid to be easily transported to the necessary parts of the engine.

Consequences of an Overfilled Power Steering Fluid

Overfilling the power steering fluid may not be as severe as having less power steering fluid in your power steering fluid compartment, but it is important to take note and avoid it. 

The following are what happens when you overfill power steering fluid:

Spillage – The power steering fluid is not designed to be air-tight. This gives room for spillage when it is overfilled. This spillage is not safe for other engine parts that the fluid comes into contact with. The spill makes a mess of the entire engine parts and with time wears out those engine parts.  

Possible Fire Outbreak – The power steering fluid is inflammable in the presence of enough heat. If an average large quantity of power steering fluid spills on a very hot engine surface of temperature between 350 – 400 degrees Fahrenheit, it will probably cause a fire outbreak in the engine.

Accidents – An overfilled power steering fluid may not seem like trouble until the engine begins to work and the power steering fluid begins to expand inside its reservoir. This expansion can only be contained in the reservoir to a specific limit.  

If it expands for too long and spills on parts like the serpentine belt, it may cause it (the serpentine belt) to slip and move out of place. When this happens, you may lose control of the vehicle or it stops suddenly, depending on the speed you are at. 

Possible Solutions to an Overfilled Power Steering Fluid

Ejecting using a Syringe

When you notice the power steering reservoir is overfilled with its fluid, you do not have to panic. Before you switch on the engine, use a syringe to extract this excess fluid from the reservoir. Do this until it is evident the fluid in the reservoir is away from the level it can spill onto the engine’s compartment.

Filling using a Small Funnel

Filling the power steering reservoir to the perfect level, where it would not spill, would be much easier to do with a small outlet funnel. The funnel will help you control how much fluid can go into the reservoir at once, and as a result, you can quickly stop pouring as soon as it gets to an ideal level.

Clean the engine after filing

Cleaning the engine parts after filing the steering fluid reservoir up with a clean rag can also help keep your vehicle clean and safe from the consequences of overfilling the power steering fluid. Cleaning it will prevent it from being messy and also help clear any possible spill from the engine parts.

Change your reservoir

If you want to put more power steering fluid in your vehicle without having to worry about spillage, replace it with a bigger and more efficient alternative. Aluminum-body power steering reservoirs tend to be more durable, they have room for more fluids, they also help relieve pressure, and generally prevent leaks.

Conclusion

In conclusion, it is safer to fill up the power steering reservoir to the ‘full’ level on the indicator than an overfill that ends up spilling all over your car’s engine during expansion when the engine is working. 

If you happen to overfill your reservoir, use a syringe to eject the excess fluid, clean your engine area, and try using a small funnel when next you are filling.

Q: Is it normal for my power steering fluid to foam?

A: No, it is not normal and you do not have to worry. Foaming in the power steering fluids occurs when air is trapped in the reservoir. Sometimes, it occurs as a result of overfilling. When you notice foams, confirm the level of the fluid, and if it is not overfilled, it’s probably nothing to worry about.

Q: Apart from lack of power steering fluid, what else causes stiff steering?

A: Since the lack of power steering fluid is excluded, it can either be a result of bad wheel alignment, irregular tire pressure, lack of maintenance, presence of thick steering fluid, etc.