I have an 06 450 and I some how sucked mud into the oil stream and completely jammed the scott's stainless oil filter full of mud, so bad that you couldn't even see into the ribs of the filter. The oil pump was sucking so hard that it sucked in the filter like an hour glass and twisted it! Holy crap! Imagine if I had a paper filter. I use an expensive motul synthetic oil and change it with the filter often (probably every 10-15 hours on bike). I had actually just changed the oil a week before this last ride and after going through a large truck mud hole, by accident, the valves got loud, the clutch was getting really grabby and just general noise, so I headed straight for the truck. The bike still starts and runs, it was just starving for oil. So I changed the oil out, which wasn't white and cleaned the scott's filter as best I could and tryed to straighten it as well. I think the scott's filter will still work because it suctions in on itself, but I hope I didn't wreck my bike. What should I do? and how the heck did I suck that much dirt into the oil passage? I have ridden the bike lots in muddy conditions, ridden through mud holes and muskeg, ridden through deep rivers and nothing has ever been a problem?? The vent hose off of the top is all I can think of, it must create a suction when the throttle is chopped?!