Where is my coolant going.....

[.RJ]

In my 325is. Waterpump, T-stat and T-stat housing are new. Radiator was flushed. I cannot find any leaks anywhere... hoses, rad, etc. Even the hoses under the manifold and to the firewall (which are new) appear to be fine.

Compression #'s are 202,200,196,210,202,205. So the headgasket is fine.

So..... I'm stumped. Its a slow loss - losing a few inches from the reservoir every week or two.