I'm in the middle of changing my water pump on my 89 190 w/2.6. Since I have so many parts off the car, I thought it would be a good time to try and track down an oil leak that runs down the front center of the oil pan and also ends up on the trans cooling hoses and bottom of the oil pan. The leak seems to happen when the car is running not while just sitting. There doesn't seem to be a leak at the top timing cover seal so I was wondering if it is the front crank seal? Has any one replaced their front crank seal and how would I go about doing this? Should I just redo the timing cover seal and the crank seal since I have most of the front of the engine apart? Thanks in advance.