I had leaking coolant tank problems a couple of years ago. The above pictures show where the leak was coming from in the tank and how my boot looked with the leaked coolant. It was the original tank and my car is a year 2000 S model with about 80000 miles. I replaced the tank myself, it was a bit of a struggle but managed in the end with a fair bit of online help. I also replaced all coolant, fitted a Pieburg water pump, low temp thermostat and a serpentine belt. Do not know what came over me, as not normally one for ott preventative maintenance lol.