[gJesus_1911]

Hello all Im in desperate need of help my current situation is that I just replaced my radiator on my E84 N55 and within a week it has dumped the coolant twice I noticed that when the car cools down and I add coolant we cannot detect a leak cooling system is pressurized. I got a Murray radiator that all they had in stock one thing I did notice is that I have an extra drain plug. By any chance do y'all think I have the incorrect drain plug installed? I tried calling OReillys couldn't get anything out of them. Im stressing out and help is appreciated.