Two of the things I noticed on the 1st video are probably the worst fan belt I've ever seen, and the fuel gauge never rose above empty.
Then again, a look at the rest of the truck, and I guess it's a science experiment...

I don't really understand a lack of mechanical sympathy, though; I plug in the plow truck & Pathfinder if temps get much under 32.
Even with 10W-30 in them, I notice a difference in turnover.