Cooling

How to fix a leaking Cummins radiator drain plug. This is a super simple fix.  Anyone with some needle nose pliers and a flat screwdriver can do it! First thing you need to do is locate it, which, if you found this article, you likely have already done.  If not, it's on the bottom, drivers side of the radiator. Now you'll want to drain the radiator of all the coolant, If your fancy automatic dra