I'm in need of replacing my rotors and pads, so I'm out looking for deals at the moment and researching. I came across one part saying it was a good idea to change the brake fluid roughly every 20k or so. My car has 51k on it now and I don't know if the fluid has been changed (30k service?). So since I'm going to be down there, should I replace that? I figured I might as well go ahead with SS lines and new fluid if I should.