How much mineral oil do I need for the power steering? It looks to be empty and I for sure don't have any power steering. I believe I have found the source of the leaks and now I just need to make sure to order enough oil to fill it up and I guess have a little extra because i'm sure it will still leak a bit

 

get enough to fill the ressevour,usually two or three bottles of castrol. you might want to stop the leakage before adding fluid.(check all hose fittings and where they go into the steering rack,usually the o rings at the fitings are bad)

 

I believe I fixed the most apparent leaks, yes simple O rings...

Probably 3 of these?
http://www.motorcarsltd.com/jlm9886.html