cheers guys!
i havent actually done the mod yet however, when im driving the fan is usually on, i think the tank is classed as an expaqnsion tank system, i have seen the lid leaking a tiny little bit but i tightened it up a little so should be ok now!!!! :-( did i see right somewhere that other than antifreeze theres another additive that you can add that will help cool the water????

whats the best way to flush a system out???

i need to look at the turbo coolers, mine is an s1 turbo unit on an s2 and it seems to get very warm also!!!!! :-(