Have a 2002 250 John Deere skid steer. Topped off the hydraulic oil the other day and two days later the dipstick was dry. It has not been moved and it sits on a concrete floor and there is no fluid on the ground. I have no idea.
Welcome to HEF Chris ! Chain case over full?
Leaking wheel motor(s) is the usual suspect unfortunately. A lot of times not worth repairing because something internal went bad to cause the seals to leak. Sometimes you get lucky though and they can be repaired economically if you catch it soon enough.