Finally got myself a brake upgrade! I have fitted disks/pads in the past without a problem but i've never changed calipers before. Do I need to drain all the brake fluid before I start dismantling? if so how what's the best way to do this? How do the brake hoses come off? I heard you need a special spanner? Do I need new brake fluid or can I just re-use the one i've drained? It was only changed in December on the 30k service. If I need new fluid do I just use the recomended VAG DOT4 stuff or is there a better alternative? Any advice would be appreciated!