Supramir - Sounds like you may have a problem that's similar to mine. I'm obviously burning coolant, but not much. I know this because one of my spark plugs is white-ish. You can check out the thread entitled "Supposed blown HG" for the details if you're interested, but basically long story short, I almost refuse to believe that my HG is blown because I have almost ideal compression on all cylinders. It might be worth while for you to check this also. Good indicator. Also, check for bubbling in your radiator with the engine running. Let me know what you come up with - it might help me solve my problem as well. Good Luck!