I just purchased a 2000 763G (Bobcat) and there is a hydraulic leak, of course. The front of the engine is clean, but the rear part of the engine compartment is caked with oil and dirt. I'd like to take the pressure washer to it, but I figured to check with the forum (which I just joined as a new owner!) and find out if there are any things to be aware of when cleaning the engine compartment. Also, what is best fluid to use, Bobcat hydraulic or 10w-40? Thanks in advance for your advice. epenak