Regular PS fluid is fine.

 

Well, should have probably done that project a while ago. Completely fixed the sloppy steering. After refilling and bleeding the fluid still look a bit nasty so I may end up trying to flush some of that out in the near future as well.

Not too bad of a project, with some heat the pitman arm came off and only broke one line that ran from steering box to cooler.

 

Congrats, good job.

 

Make sure you finish the flush when you get a chance. I replaced my factory box with a redhead around 4 years ago and it's still tight today running 35" tires.