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Can I use an ATF 4 for power steering?

The short answer is no, you should not use an ATF 4 (Automatic Transmission Fluid 4) for power steering. ATF 4 is specifically designed for automatic transmissions and does not have the appropriate properties for power steering systems. Using the wrong fluid can lead to damage and poor performance in your vehicle's power steering.


Understanding the Differences Between ATF 4 and Power Steering Fluid


Automatic transmission fluid (ATF) and power steering fluid are not interchangeable, despite some similarities in their appearance and viscosity. ATF is formulated to provide the specific lubrication, friction, and hydraulic properties required for the complex components of an automatic transmission. In contrast, power steering fluid is designed to work with the unique demands of a power steering system, which includes providing the necessary lubrication and corrosion protection for the pump, valves, and other components.


Using an ATF 4 in a power steering system can lead to several issues:



  • Inadequate Lubrication: Power steering systems require a fluid with specific frictional and lubricating properties to ensure smooth and efficient operation. ATF 4 may not provide the necessary lubrication, leading to increased wear and potential failure of power steering components.

  • Incompatible Additives: Power steering fluids contain specialized additives to prevent corrosion, foaming, and other issues specific to power steering systems. ATF 4 lacks these critical additives, which can result in premature wear and damage to the power steering components.

  • Viscosity Mismatch: Power steering fluids are typically formulated with a lower viscosity than ATF 4, which is designed for the higher-pressure environment of an automatic transmission. Using a fluid with the wrong viscosity can impair the power steering system's performance and responsiveness.


To ensure the proper operation and longevity of your vehicle's power steering system, it is essential to use the specific power steering fluid recommended by the manufacturer. Consult your owner's manual or contact a qualified automotive technician to determine the correct fluid for your vehicle.

What is compatible with ATF 4?


ATF+4 is fully compatible with all transmission applications where ATF+, ATF+2 and ATF+3 Automatic Transmission Fluids are specified. Only certified ATF+4 is recommended for service of FCA vehicles as where ATF+4 is specified in the owner's manual.



Can you use other oil for power steering?


While a lot of cars use a universal power steering fluid, there are some cars which must use a specific power steering fluid that contains particular additives. For this reason, it's always a good idea to refer to the car's owner manual.



What is equivalent to Mopar power steering fluid?


If MOPARĀ® Power Steering Fluid +4 is not available, then MOPARĀ® ATF +4 Automatic Transmission Fluid (05013457AA), is acceptable.



What transmission fluid for power steering?


Automatic transmission fluid (ATF) serves as the primary fluid inside automatic transmissions. Interestingly, some power steering systems also utilize ATF. Examples of ATF types include Dexron and Mercon. In contrast, synthetic power steering fluid is a laboratory-created, non-oil-based fluid.



What if your car has no power steering fluid?


Driving without power steering fluid makes your car's steering much heavier, requiring more force to turn the wheel. Prolonged driving without this fluid will damage the steering pump. The pump vanes, which produce heat, will fuse down due to lack of lubrication, increasing the risk of drive belt damage.



What is ATF +4 for?


Mobil ATF+4 is specially formulated to ensure optimal performance in Chrysler automatic transmissions. Its unique additive package provides the proper frictional properties, excellent low-temperature fluidity and dependable wear protection required in applications where a Chrysler MS-9602 type fluid is recommended.



Can you use ATF 4 transmission fluid for power steering?


Power steering fluid and ATF are not the same and they are not interchangeable. If you mix them they will destroy your seals and you will need to rebuild your steering system.



What can I substitute for power steering fluid?


For most cars ATF (automatic transmission fluid) will work fine in the power steering. The other option would be UTF (universal tractor fluid). Your mileage may vary use at your own risk.



Is it OK to put transmission fluid in power steering?


It says check with old hot and used use approved for oil but fluid. Look over here 68 Mustang exact same power steering pump. And everything as the 76 for truck.



What happens if you use transmission fluid instead of power steering fluid?


Meanwhile, power steering fluid is pinkish, amber, or clear and smells like burnt marshmallow instead. ATF, however, contains friction modifiers and detergents to clean out the automatic transmission's dirt and grease away yet damage the hydraulic valves of the steering rack and pump.


Kevin's Auto

Kevin Bennett

Company Owner

Kevin Bennet is the founder and owner of Kevin's Autos, a leading automotive service provider in Australia. With a deep commitment to customer satisfaction and years of industry expertise, Kevin uses his blog to answer the most common questions posed by his customers. From maintenance tips to troubleshooting advice, Kevin's articles are designed to empower drivers with the knowledge they need to keep their vehicles running smoothly and safely.