I've a 5045E with 275 hours. I had some sheet metal under the tractor and noticed some coolant on it. With a little looking I found a leak on the head gasket on the left side (as sitting in seat). It's mostly been used to pull a 6' shredder, some lifting, and drilling post holes. Nothing serious. Had never shown signs of overheating. Anyone else experienced this or heard of it. Would certainly expect more from JD.