23-01-14, 10:54 PM
The oily crap comes from over filling the oil or from excessive gases getting past the rings and pressurising the crankcase causing oil to get pushed into the airbox. There's a pretty big kink in that breather too so it'll get blocked quick enough and then the lovely mayo builds up from water vapour not being able to get through the breather. That's my theory anyway and I'm sticking to it :lol