How to FLUSH Power Steering Fluid

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Here's how to FLUSH the power steering fluid from your car and REPLACE it with BRAND NEW fluid!

This method will work on ANY vehicle with hydraulic power steering, and is SAFE, EASY, and CHEAP to do YOURSELF at home!

Power steering fluid wears out over time and can lose its lubricating properties. While many service manuals may not give a specific time to change this fluid, many power steering rack failures can be attributed to dirty or contaminated fluid.

Flushing the fluid is fairly straight forward. The car must be on jackstands with the front wheels in the air for the wheels to turn freely. You'll need a 3/8" clear vinyl hose, a barb fitting, a bucket, some power steering fluid and rags, that's all!

A PVC hose is attached to the return line on the reservoir and directed into a bucket awaiting below. The return hole on the reservoir is blocked allowing fresh fluid to be added and cycled through the system as the wheels are turned.

Old fluid rushes through the system and into the bucket. When the fluid changes from dark red/ brown to bright red, the system has been flushed. Care must be taken not to let any air into the inlet tube.

Most Toyota/Lexus/Scion vehicles use Dextron III automatic transmission fluid (ATF, as written on the reservoir cap in the power steering system. Do not use power steering fluid on these vehicles. Other vehicles specify fluid type on the reservoir cap.

Procedure applies to many vehicles such as the Toyota, Camry Corolla, Yaris, Avalon, Solara, Sienna, Highlander, Matrix Rav4, 4Runner, Scion tC, as well as the Lexus ES300, ES330, ES350, RX330, RX300 and RX350.

It is recommended to change the power steering fluid every 4-5 years or 60-80K miles, or whenever the color appears dark red, brown or contaminated. Refill the reservoir to the full-cold mark and recheck the fluid after a test drive.

Stiff steering is more likely the result of a loose power steering belt, worn steering shaft joints or a failing pump. Whining noise can be caused by dry pump bearings or bubbles in the the fluid.


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