I have a 2006 CK25 with 501 hours. Today I was using it to push trees around into my burn pile. While I was off the tractor and it was sitting at idle I noticed antifreeze dripping onto the ground. I popped the hood and saw the coolant recovery tank was gurgling and the antifreeze was coming out. I then saw the temperature indicator was showing hot. I stopped the engine to think about what might be causing this. I waited an hour and popped the radiator cap and could not see a level in the radiator. I may have lost this much during the gurgling. I restarted it and the gurgling started again. I stopped the engine and parked it. Could this be from a blown head gasket? Any other ideas?...Please have some. I don't want a blown head gasket!