I did not put a magnet to them though.. There were bigger chunks than that.
Sounds like your boss unloads vehicles before they get too many miles on them. If this statement is incorrect and they keep vehicles well beyond 100k miles, going this long between oil changes is definitely false economy. They will pay 10x the cost of an oil change when things start to fail, or if they simply unload the vehicle when things fail, they will lose 10x the cost of an oil change in reduced value of the vehicle (i.e. needs fixing).
Yeah, not all Napa Silver applications use combo valve, some like topic do use separate dome bypass. At 25k mile fci, a definite benefit here imo....Nope. It was a silver.
Sounds about like the company I used to work for. Oil wasn't changed it was just topped up when low. They had a van that the oil filter rusted out on because it was on for that long. They slapped a new filter on it and sent it down the road.