Changed this today , withdrew both pipes from the cooler , one which runs from the power steering reservoir , and the other comes from the rack , I only managed to get just under a 1ltre of old fluid out so having been recommended to buy 2 L, I think I only did a half job . I also vacuumed out what I could and turned the steering left to right to expel all that I could.
only about 1 ltre has been replaced of new fluid .
Has anyone done this on a td6 before , I imagine the petrol version is a similar system.