Can You Use ATF For Power Steering Fluid?

Since ATF and power steering fluid both share the same core hydraulic properties, you can replace your car’s old power steering fluid with ATF (automatic transmission fluid) in case of emergencies.

Can you use ATF for power steering fluid for your ride? Before tossing that jug of ATF into your hood and filling the tank as you would with engine oil.

It’s likely worth your time to consider what makes each of these fluids unique and how those distinctions can affect your vehicle.

Can You Use ATF For Power Steering Fluid

Sometimes, yes, you can use ATF for power steering fluid and sometimes No. The first step is to look up your vehicle’s owner’s manual.

ATF and power steering fluid are very comparable in that both are used to lubricate hydraulic systems. But they’re not always interchangeable. Using ATF as power steering fluid might be an acceptable alternative for some vehicles.

ATF and power steering fluid are both hydrocarbon based fluids, and most of the additives are compatible, which means that they perform similar functions within your automatic transmission and supply benefits similar to those of your power steering assist system.

They both provide lubrication to the gears and other parts while maintaining the valves and seals with hydraulic pressure.

Each fluid comes with a different chemical composition and a customized additive package that can affect the performance of your power steering and transmission, depending on your driving patterns.

ATF would be acceptable as a substitute if your vehicle’s manual specifically says it can be used. Otherwise, using ATF might result in noise, reduced responsiveness of the power steering system, or, potentially, damage to the power steering system over time.

If you’re in an emergency and power steering fluid is not available, the ATF would be acceptable for emergency use. Still, you should replace the ATF in the system with the proper fluid as soon as reasonably possible.

Follow your vehicle’s manual carefully to ensure it identifies the right fluid type, and contact a professional mechanic if you’re not sure or if you’re experiencing a problem. Use the correct fluid to operate your vehicle safely and reliably over the long term. 

Difference Between ATF And Normal Power Steering Fluid

Like the artificial fluids designed for brakes, differentials, and wheel bearings, ATF is designed to handle a wide range of temperature fluctuations and operating conditions.

Each of these fluids has been formulated with specific characteristics, wear properties, and the delivered power required to effectively optimize the respective system’s performance.

That’s why first of all we have to understand the differences which depend on chemical ingredients, viscosity, and manufacturer recommendations.

Chemical Ingredients

Different chemical additives might have been added to power steering fluids and ATF (automatic transmission fluid), and the formulation might vary.

The chemical additives might be tailored to the specific needs and requirements of ATF. So, in conclusion, power is fluid for the hydraulic system on a steering mechanism, while ATF is fluid for the automatic transmissions.

Viscosity

While ATF has a viscosity of 90, the conventional power steering fluid has a viscosity of 75. (Using the former wrong fluid may thus influence your steering’s performance.)

Difference Between ATF And Normal Power Steering Fluid

Manufacturer Recommendations

Vehicle manufacturers design their systems with an eye toward specific fluids. Contaminating that system with one not recommended, ideally by your manufacturer, can void the warranty or cause long term damage.

When You Can Use Normal Power Steering Fluid As ATF

There are some specific procedures on which its acceptance depends on. They are given below.

Manufacturer Approval

If your vehicle was engineered to use a premium power steering fluid alternative, that choice may have been ATF. Check your vehicle’s OEM manual for approvals that list ATF as a recommended alternative.

Emergency Use

In a pinch, if you do not have the correct power steering fluid and need to use ATF to get home, do so, but then replace it with the correct fluid as soon as possible. 

Risks of Using ATF

Performance Problems: Driving with ATF could compromise the way the power steering system works (such as responsiveness or noise). 

Heavy Damage

When filled with the incorrect fluid, parts can start wearing down and even breaking over time, resulting in expensive repairs.

You can avoid problems if you follow these preventative measures when using any fluid in your vehicle, including using ATF as power steering fluid.

Guidelines To Use ATF For Power Steering Fluid

Check the Owner’s Manual: Your owner’s manual will always tell you which type of fluid to use. Use only that type of fluid, as anything else can lead to damage.

Look at the Fluid Specs: Check the manufacturer’s specifications because, while some vehicles do approve ATF, others do not.

No Substitutes in Non Emergencies: In normal circumstances, use only the recommended power steering fluid to ensure optimum performance and avoid long-term damage.

Monitor System Performance: If you must use ATF temporarily, pay close attention to how your steering system sounds or works. Get it fixed if you notice any problems.

Guidelines To Use ATF For Power Steering Fluid

Keep a Regular Maintenance Schedule: Power steering fluid should be checked and topped off, flushed, and replaced according to the manufacturer’s schedule. The correct type of fluid should be used to ensure that the power steering will work properly and last a long time.

FAQs On Can You Use ATF For Power Steering Fluid

Can I Use ATF in Place of the Power Steering Fluid?

Surely, in some cases, yes, but you should check your vehicle’s manual first. Some vehicles can accept ATF as a substitute, but that doesn’t necessarily mean that your power steering fluid should be ATF, and using the wrong fluid can potentially destroy your power steering system. 

What Are the Risks of Using ATF Instead of Power Steering Fluid?

The result could be increased power steering noise, reduced responsiveness of engine power, and, in the long term, damage to some power steering components, resulting in even more expensive repair bills.

How Can I Know If ATF is Right or Not?

Check the owner’s manual inside your vehicle. As long as ATF is listed as an acceptable alternative, follow this procedure. If not, stick with the power steering fluid recommended by the manufacturer.

Can I Use ATF Temporarily If I Run Out of Power Steering Fluid?

ATF can be used in an emergency, but it should be replaced with the correct power steering fluid as soon as possible to avoid trouble for your steering system. 

What Should I Do If I Accidentally Use ATF?

If you put in ATF, pay close attention to your steering for any whining noises or performance issues. If possible, flush the system soon and refill it using the proper power steering fluid. If you have any concerns or problems, see a mechanic.

Conclusion

ATF might be suitable as a substitute for power steering fluid. Nevertheless, it is recommended that you use only the fluid recommended by your vehicle’s manufacturer.

Use a vehicle’s manual or refer to a professional mechanic to confirm that you are using fluid meeting the correct specifications for your vehicle’s characteristics.

Dennis Walton is an experienced automobile engineer and also an automotive blogger of How We Drive. He shares his automobile engineering like vehicles problem's reasons and the perfect solutions on our website. It helps car owners to solve small issues at their home.

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