I wanted to drain the coolant out of the engine and replace it with water + waterWetter, but when I looked for the drain petcock, it was missing. It has broken off. So I call the friendly local radiator shop, and he says a new radiator takes two days to install! I asked why you can't just replace the plug, and he says "maybe they can drill it out." Is there a good way to remove the broken part of the radiator drain petcock, and install a new one? I think the local AP has them (it has 10 x 1.25 threads.) I probably could just disconnect the lower hose, but I'd make a mess of the floor, probably, or can you inch it off and get a controlled leak? I don't think it's loosing any coolant. BTW, is it possible to protect the petcock so it doesn't get broken again? It probably broke when driving in some grass. thxZ