Over a month ago after using my 2210 I notice that antifreeze was leaking out the overflow bottle. The bottle was full, at first I thought it was foaming. I came back a week later to check if I had a head gasket problem or not. So I had to add a good bit of water in radiator and ran the tractor looking for bubbles. Looked ok. I then decided to add a temp gauge. Since then I bushhog 3 arcres twice without the temp going over 170 and losing no water. No idea what happen . I guess I better keep a good eye on it. These tractors are so good that they repair themselves.