OK so the time has come I think to renew the coolant in my car.

Problem kinda started when I saw that I had a coolant leak! One of the metal pipes in the cooling system has rusted through and is leaking coolant.

I have bought a new pipe + some new seals from the local VW dealers. I intend to
1. Drain the system,
2. Flush the radiator out also
3. Remove and replace faulty pipe and seals.
4. Reassemble everything and refill with coolant

The question I have is "How much coolant does a mk3 gti 8V take?" I cant seem to find that information anywhere? I think its G12 coolant I get and I mix it 50/50 with distilled water (does it have to be distilled? will bottled mineral water do instead?) Not sure about this part, but what is the total volume of coolant mix the car will take?

Oh one last point! Er... Anyone know a good way to clean coolant marks from inside the engine bay?
Alot of questions, I know

Any help?