Well,, Fritz (1990 300E) got a bit hot yesterday. Was on way home from work and temp shot to max. Luckily there was a self car wash near. I pulled in and hosed the radiator down and checked the coolant. Of course it was low. I topped it off and went on home and began looking for leaks. All hoses were dry. Rad was not leaking, front of water pump (bearing) looked dry as a bone. However, coolant was pooling on the side of the block under the water pump. Could not see any coolant on the pump itself. Since it was getting dark, I gave it up. Question is, Is there a weep hole under the pump where the coolant may be escaping? Or could there be a gasket involved?