1) Can I use power steering fluid instead of ATF?
In the transmission? No!
2) And is there any damage done in the steering system if I use power steering fluid?
In place of ATF? Possibly, if the recommendation by the manufacturer is to use ATF, then I would stick with what they say to use.
Some power steering systems need Dexron, or a Dexron like substitute, or other similar types of ATFs - while other car manufacturers are specific about using fluids that are specialized for the steering fluid system but have slightly different properties.
Both fluids, however, have similar seal materials that resist the breakdown of hydraulic fluids. It is always better to follow your manufacturer's instructions about using the various fluids in your car. Sometimes if you can't find a specific fluid, the auto parts store usually has a compatible power steering fluid substitute.
Glad to help: Glenn (oh, and Thanks for the "Thanks")
Friday, April 2nd, 2021 AT 6:26 PM