I was about to do an oil change on my 2008 250XC and noticed a bunch of oil/sludge around the gear box. Could this be some sort of leak? Oil seems to be all around the gearbox case. I havent dumped the oil out of it yet since I ran out of oil. Any ideas on what it could be? The last time I changed the oil I did not notice it and I did not use a torque wrench for the oil plug. Any help is appreciated.