Thanks for the quick response pizzaguy. The eight years I have had the car the temp gage has always been half to just below half no matter how long the motor has been running. It comes up slow then drops to just below half. It comes up slow now but at the half point the light comes on and then it starts creeping up the longer it runs. For a few days last week, when I started the car the fan would come on full blast like my neighbors E500 Merc. Then it would go back to normal. It has never changed speeds like that before (that I could hear). I start loosing fluid from the resivour when I shut the motor off.