Last night I drained, flushed out, and refilled my power steering fluid. Really pretty easy. I had a DEF container and stole the spout from it. Used that to aim the old fluid into my drain pan. If you leave the cap on none will come out until you're ready. After that plugged it with a hose and bolt.
Aimed the return line down into the pan too.
I flushed it out with some cheaper fluid, then filled with this.
Made sure I got any air out and fired it up. I was getting a slight whine from it with the old fluid, now it's quiet as a mouse.