ATF is used more for cleaning and friction while PSF is used for lubrication and to reduce friction between the power steering parts. PSF also reduces excessive temperature build-up, lubricates the steering pump and gear unit and provides hydraulic pressure to the system parts.

Generally yes, you can use ATF in your power steering pump. Power steering fluid and Automatic Transmission Fluid are both hydraulic fluids. Power steering fluid and automatic transmission fluid are both hydraulic fluids, so mixing them isn’t supposed to be an issue.

It will work fine in a hydraulic jack. It will work in your automatic transmission, but it might froth or overheat under load. It will work in your motorcycle forks for road use, but not so well for motocross if it contains much hydraulic fluid (the ATF is fine).

Generally yes, you can use ATF in your power steering pump. Power steering fluid and Automatic Transmission Fluid are both hydraulic fluids. Your Power steering system is a hydraulic system. ATF has an advantage in that it has some detergents in it that can help keep your system cleaner.

POWER STEERING FLUID TYPES Different vehicle applications may require different types of power steering fluid. Some use ATF transmission fluid such as Dexron, Mercon, Type F, ATF+4, etc.) but many newer vehicles use some type of synthetic-based hydraulic fluid that is specifically formulated for power steering use.

Use ATF+4 only. Don’t use anything with Dexron/Mercon fluids. These fluids will cause TCC slippage/chatter problems plus wear out your transmission sooner than you would like for. The slipping could also be due to the bands needing adjustment.

Dexron VI is the latest GM ATF developed in 2006 for the latest six-speed automatic cars. However, GM does not advise using fluids like Amsoil Dexron VI in non-GM make vehicles that used Dexron III ATF power steering fluid.

If the dipstick or reservoir level is between “MIN” and “MAX,” you don’t need to add fluid. If the fluid is below the “MIN” line, remove the cap (or leave the dipstick out) and add power steering fluid in small amounts, checking the level after each time. Don’t fill it above the “MAX” line.

If your wheel feels “hard” and tough to turn, you might need power steering fluid. Loud steering: Steering shouldn’t make sounds. The minute you notice that your steering wheel is making loud noises, it’s time to check the power steering fluid level in your vehicle.