Well, in Teds case, the machine was way out of warranty so no worries. The main thing I got from the video about overheating was the dyno. I think he specifically mentioned that he felt the factory tractor cooling system was well up to the task.
Lets not try to over complicate it. At the end of the day, it is just a diesel engine, mechanical fuel pump, mechanical timing, same as the other 20 million being used every day in different applications. It isn't the variable valve timing, drop a cylinder for efficiency, magnetic suspension, collision avoidance, computer controlled idiot box commuter car being forced on us by the establishment.
Having said all that, mine stilled bogged down trying to scoop a full bucket just like it did yesterday, even after 2 full turns. Never saw any smoke, it might have all been stopped by the afterburner, probably, but my Butt couldn't tell any difference at all. I left it at a turn and a half up, going to knock down some trees tomorrow to see if I notice any difference from what I had last spring. I doubt it though. Without a dyno I don't think the most calibrated buttocks will be able to tell the difference from 35 to 45 hp.
Darn sure CAN tell the difference between the factory hydro setting and what it is cranked up too now. Not going into numbers for fear of the safety nazi factory warranty police roaming around here but that mod made a huge difference in lifting and digging.