Home › Forums › Stay Dirty Lounge › Service and Repair Questions Answered Here › 2001 Mazda Millenia Cooling System question › 2001 Mazda Millenia Cooling System question December 19, 2019 at 5:17 pm #895545 college manModerator If the system runs to long cavitating it burns the seal and will start to leak. At least you found the problem. 15 degrees today here. not a good day to tackle it. Keep us posted on your progress.