Persistent coolant loss can be caused by a small leak at the coolant reservoir. Our technicians tell us the leak may not be visible due to the trunk carpet hiding the leak.Google+
Car Problem Reports
Porsche Boxster Persistent Coolant Loss Due to Small Leak at Coolant Reservoir
Porsche Boxster Problem
Average Mileage: 68,303 mi (32,215 mi - 108,000 mi)
Visitor, 1997 Porsche Boxster, 32,215 mi
Have to add coolant every month.
Visitor, 1999 Porsche Boxster, 83,000 mi
anti freeze loss. had a 1998 boxter and had the same problem. think it to be the radiator reserve tank. if engine was consuming water, it would mean a head gasket issue, but car would not be ideling smoothly.