pump cone

Hey everyone I needed to change a wear ring in my 2001 sea doo rx so I thought I might as well change the pump oil too When I took the nose cone off barely any oil came out and it was all black and watery and smelled horrible like old exhaust anyone know what would cause this ? A bad O ring on...

Here's a video I made testing this thing out, and explaining it, because all the forums I have searched, nobody came up with an answer, all I read was "I just got one, i'll let you know how it works" and nothing since 2009 when they posted it....so if you are interested, like I was, here it is.