Senior Tech Team
Join Date: Sep 1998
Location: Bismarck, ND USA
Whenever I have encountered these kind of leaks, they have all been from a poor windshield seal.
They usually trace back to the poor quality of the old rope seal used in older cars.
The purists will cringe at my fix, but my cars all get the new Urethane sealers, and the water leaks go away.