So I want to drain down the PAS fluid and replace with fresh fluid, as the old stuff is looking a bit on the brown side rather than the nice new VAG green fluid in two new bottles. I just wonder the best way to remove as much of the old fluid as possible, and the best way to fill the system. I was going to remove the hose going to the bottom of the pump and was thinking about moving the steering left to right until as much old fluid as possible has been removed. Then to refill the system, do what is stated in the Haynes manual, so fill the system and move the steering left to right 10x then check the level, was going to do this until the level remains the same, then start the engine and move the steering left to right a few times and keep topping up as necessary, then just leave it for 30 min and start the engine again and do this until it stops foaming. Have I missed anything would this be OK?