Im working on a 2011 New Holland L220 skid-steer. I replaced a hydraulic hose that had been leaking for some time. As a result, the entire “belly” of the machine is caked with oil soaked sludge. What’s the best way to get as much of this junk out of the machine? I feel pressure washing isn’t going to be to effective, as there doesn’t appear to be any drains in the bottom???