I have a 89 300se with 193k on it. The other day, I was under the hood checking oil, etc. and I noticed a spot of antifreeze on the garage floor. I checked around to see if I could see anything leaking in the motor such as hoses, waterpump, etc. and found nothing. I went on about my business and have been watching it for the last few days. Everynight after the car is brought into the garage and has sat for a while, you can look under the car and there will be a spot of antifreeze about the size of a softball. Last night I crawled under the car and tried to look from underneath. All I saw was a bead of antifreeze that looked like it had come from the front portion of the oil pan and had settled under the pan and there was where it would drip on the floor. In the past when I have had waterpump problems on other cars, the antifreeze will show up around the waterpump itself and a lot of times will splatter on some of the hoses. Can anyone tell me if I am looking at a new waterpump or could it be something else? Also, is there something else I can check to pinpoint the problem?