Antifreeze drip on timing gear & oil pan

[Saturn822]

I recently rebuilt the cooling system on my 1993 BMW E36 325i with 70,000 miles on it. I put in a new radiator, new radiator mounts, thermostat housing, thermostat and water pump. The car runs fine with no overheating but I get a very slow dripping of antifreeze onto the timing gear and front of the oil pan and front stabilizer bar. I don’t loose much antifreeze maybe the amount in my expansion tank every 3-4 months. It seems only to drip when the engine is cold or maybe it burns off when the engine is hot. It’s hard to see with all the belts and pulleys in the way but it seems to be coming from the area of the water pump which is new. Could this be normal drip-page from the weep hole of the water pump? I couldn’t see taking everything apart for such a small leak so I put in some Prestone radiator stop leak with fibrillated Kevlar® particles. It stopped the leak fine. Will the stop leak do any damage to the cooling system?

[Jeron]

Sounds like the water pump or thermostat housing. I dont know about the stop leak causing problems but I would not have used it.