Ive got a procharged 00 ws6 that Im having a problem keeping the radiator full. Its not leaking it, and it doesent appear to be burning it, but it keeps overfilling the overflow bottle. It keeps sucking out about the top 3 inches or so out of the top of the radiator. I replaced the radiator cap and I have drained the overflow bottle 2 times already, it just doesent want to allow me to keep the radiator toped off. the car is not having any problems overheating and it appears to be cycling fluid fine.