Steve, What Damage can overheating do? I don't know if my engine has been overheated previously, but it once overheat on me because belt went off due to tensioner fall-off. So I got message Check Temp and temp went to max, I pulled over and stopped in a seccond. I did drive with steering off for about 100meters though. I had Valve cover gaskets and timing gaskets changed a few weeks before. Now My problem is that I need 1Quart approx every 1k Miles. I get Misfire code Only when in cold, on 5,6 OR 1,2. I don't remember sorry. I suspect coil? I had oil on 2 Cylinders on pass side at the back of the engine before gasket change. I get a little smoke only when cold outside. I also am suspecting PCV valve and Oil Sep. and going to change those. Also weird, but I loose coolant ONLY after letting car sit for 2-3 days. Don't know where it goes since nothing is wet on the driveway. Car went on me once or twice for putting into gear right after start-up. No Idling. I use 10-60W Castrol Synthetic. Do theese symptoms come to anything? Thanks