This is what happens when you don't have any scheduled maintenance. The crew just run it until it dropped. I just found this in one of the trailers. This unit was last checked in 10/2009. At that time it had ports cleaned plug new shoes filters. Keep in mind this unit was over 5 years old in 2009. So it ran two more years. Yes all that gloupy stuff is oil/clutch debris all mixed together. I don't know how the oil got into the clutch area because the crank seal behind the flywheel was dry. And you can see that the shoes are down to bare metal. So the unit wouldn't start.....Put new crank seal behind recoil, had to put a replacement coil, put carb thru ultacleaner, new plug, and had to remove and clean oil out of the on/off switch it was shorting. The unit cranked up and runs fine. And new clutch shoes. I am planning to pull the head off to check condition of the piston rings and bearing.