Lower wishbone ball joint
So I got my car checked out today regarding some issues i've been having with the suspension.. (Creaking at low speeds when I go over speed bumps, potholes etc) and the main one (rubbing/grinding noise whenever I turn left or right).. mechanic said that the upper wishbone arm definitely needs changing and that the lower wishbone ball joint MAY be causing issues too.
Before I get both front upper and lower arms replaced, is there anything I can do to try and solve these issues? I've read some threads where people have injected grease or sprayed lubricant on the upper bushs and lower ball joints? Is there a guide for this? As I have no clue where to look or how to do this.
I'm looking to sell my 147 right after this issue is resolved so looking for the cheapest fix.
Thanks in advance!