I have a 2006 with about 230k. I have started getting a little noise turning the wheel usually characteristic of power steering pump issues. It has the original fluid. It isn't leaking but I figure I might as well change it out and see if it goes away before troubleshooting further to determine if the pump is on the slide or it might be a loose or slipping belt or tensioner. The noise happens while driving at low speeds and turning the wheel either way. It also occurs in P by just turning the wheel. No clunks thunks or other noises... car is running well and pretty darn smooth at all speeds.
I looked in the reservoir and the fluid is clear with a hint of yellow. The Valvoline Dex/Merc Dex-iii stuff I got is red. I was thinking of just siphoning out the reservoir and exchanging it little by little over the next few hundred miles. Can this stuff be mixed?