I spent a couple hours this afternoon doing a brake flush on my S and cleaning the insides of the wheels. Went smoothly. Used the dry method. Refilled the master cylinder after each caliper was flushed. Saved washing out the motive. Brake fluid in the car was from Oct 2007. Just a couple tiny bubbles.
I used dot 4 from an almost new container. It was opened a couple months ago when I was fixing a torn piston seal on my Jetta.