You could have a leaking head gasket which leaked into the cylinders and allowed anti-freeze into the cylinders. The heat may have damaged the seal to the water pump or it could be residual fluid from the engine leak.
Get a cooling system pressure test gauge. If you have a major auto parts chain store, like Auto Zone, they usually have loaner tools like this. Test the system for pressure and to see how long it will hold pressure.
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Thursday, September 22nd, 2011 AT 7:50 AM