Had the loader on today, took down an old playset and then dragged it into the driveway to be further dismantled and loaded on a trailer to the dump. Then was moving a large pile of wet mud from where the propane tank for the pool heater was just put in. Noticed oil dripping from the underside on some grass I had run over. Took a look, and the whole area of the rear PTO covered in some kind of oil. Consistency a lot like power steering fluid, except not that pinkish color. I don't see any obvious signs of leak. I did not hit anything solid on the underside. I did overload the bucket once, and put it on three wheels going over a tree root. Other than that, nothing sticks out in my mind. Any ideas what to check for? Thanks in advance for the help!