Its for a 2006 hummer h3. Fluid has never been changed. I will be using a fluid exchange machine, also putting a inline filter by a1 cardone. I have $40 store credit so price doesn't matter. Fluids readily available- redline p/s fluid, mileguard universal fluid,valvoline. I'm gonna use almost 3 qts try to get all old fluid out. Reason I'm doing this service, we four wheel a lot so I think its a good idea. And car has 80k. From researching gm cars just take a simple p/s fluid?