I was using my B6000 to pull a couple of logs and to start a trail path in my wooded area. Did this for 30 minutes and was finished so I started to drive back to the garage when the the engine lost power and appeared to freeze up and stopped. Like it overheated, but no steam from radiator and it was full. Oil level was full, had diesel and fuel pump was working. After it stalled the starter struggled and turned over once and that was it. I opened the hood and everything looked fine. At this point it had sat for maybe 5 minutes tops and I decided to try and start it again. The starter spun fast and it fired right up. Drove it back to the garage and let it idle for a few minutes and all seems fine. Outside temp was only 60 F so not hot. I did work it fairly hard pulling those logs out of the woods but it was a few minutes after that it appeared to seize up, as if overheating. I haven't owned very long and this only the third time I did any real work with it. FYI, water in radiator is clear, not sure about the flow though. Was this just a weird moment or should I be worried?