I have a new mower with about 40 hours on the engine. I took it to the shop for its oil change and when I got it back I noticed that there was some oil spray around the filter and on the deck. I figured that the filter just was not seated properly and checked the oil. The oil was still showing good so I ran the machine for about 20 min. When I took it back to the garage I checked the oil again and it appeared fine. Three hours later I returned to find oil on the floor. I cannot tell if the oil is coming from the back of the filter or the area where the oil stud is located. Anyone have any thoughts on this? I am going to the dealer this week but I was curious what is behind the filter that would cause the leak. The dip stick still shows about half but I have not run it since the oil in the garage.