Originally Posted by Tractionless

As for PS fluid, no reason to change it all out just drain and refill the reservoir the at every oil change to keep fresh. I'd do rear end if I were you. I changed my OE LSD at 72k miles, it was black (red is new) and beginning to smell burnt. I'd also change the trans. regardless of how it feels, same comment as previous regarding rear end. All fluids break down over time regardless of mileage. Get a electronic brake fluid tester that shows percent water in the fluid if 2% or under, no reason to change it.