Funny, the Mother of invention & all. After having just experienced what has to be a 1 in a million chance of having a fitting bust, I had to devise a way to drain the oil cold since I couldn't take the boat out. Oh, AND the water that somehow managed to find its way into the one hole where the aforementioned fitting once lived. I tried all sorts of things including the drill pump & trying to blow it out with air compressor. I even made an attachment to fit a ShopVac hose, to try & suck it out. Yeah, that resulted in a gigantic mess. Finally, I, too, found that the hand siphon pump tube does indeed fit into the drain line perfectly & after a couple of hours of pumping finally came out on top!