oil leak

so i went to the Kubota dealer today to look at a new tractor and while I was there a case backhoe caught my eye and well its for sale for 9k. I asked the guy if anything was wrong with it and he told me that the guy who brought it in said that after a hour of using it that it starts to leak oil (there was a thing of oil under it so it does leak even when parked). i asked if he knew what was wrong with it he just told me no so would anyone might have a idea what could be wrong with it and if...

oil leak

oil leak