To make a long story short. 1987 Turbo II rats nest fire, replaced everything on top of motor including main wire harness. Put fire out with chem extinguisher, but fire company came and threw cold water on my engine... Thanks 911 the fire was already out. Anyway they were doing their job, I should be thankful. I am sucking coolant somewhere, no sign of leaks and the exhaust is not really coming out with vapor... very strange.

Any ideas what to check? I lose coolant at a pretty high rate. Filling and purging air does not seem to solve the issue. I can run about 15 minutes an be down to the level where alarm goes off.

Is it possible the turbo is sucking the coolant? How about the BAC, is it possible some control device by vacuum is sucking in the coolant. Worst case, could I have a block crack into a chamber, or seals that are gone?

Oh, more history. Replaced engine at 133K and I have about 30K on the mazda replacement engine.

Thanks in advance for some help... I just have not had the time to start breaking the car down to troubleshoot.