My rock sold grand prix (2006 GT) has been giving me issues. Last year the shop rec replacing power steering lines. I said no and 1 year later they blew. Then started making noise. They replaced the rack and still had noise. So I replaced the pump today with an autozone one. Car then sounded awful. Thought I got bad pump (there was a little shaft play) so I exchanged it. The guy there said the problem was using Prestone power steering fluid. He sold me dex ATF and said that would fix the problem. Now I am getting a little gun shy to put ATF in.
What do you guys think? ATF OK?