[ubbe66]

Hello !
When driving normal, no problems !
When idel a long time, the waterlevel in the tank is "increasing volyme" and it leak from the
Expansion cap ( new model ). Also when driving hars on track it will starg leaking after the driving ? I have also change the expansion tank !

My only guess is air in the system...
any othrr guesses ??

Urban
Porsche 986 Boxster S 2000