I was carrying groceries in from the car about an hour ago and noticed a trail of liquid coming from under my 1k5. I used the scientific test of running my finger through the trail to determine that it was oil. So, I climb under it to investigate and discover that the source is the engine drain plug. It was about 4 turns loose. I had my machine in last week for my 100 mile service and got it back on Friday morning. Had it out yesterday for a day on the trails. I didn't notice any oil on the garage floor yesterday and didn't see any on the trailer after we got back yesterday evening. I am guessing it was loose and when I pulled it off the trailer and into the garage it loosed just enough to start leaking. I suppose the lesson here is always double check to be sure all your plugs are tight before and after a day of running your machine. Just glad I didn't have an issue while we were out yesterday. If I had lost the plug on a trail and ran the engine dry, I would have been remarkably PO'ed.