What I get out of that is the importance of using a micron bypass oil filter, whatever oil change interval is used. Plus change those small turbo feed oil screens periodically. He did not mention anything about micron filters but that is what I was thinking the whole time.
Metal wear can take place even within 5,000 miles. Yes, changing the oil at 5,000 miles keeps the concentration of fine metal wear debris low but a good micron filter constantly filters it out.
I have used micron bypass oil filters on my two Rangers over a period of 43 years. They work. When I did the timing chain rebuild at 250K miles on my current 02 Ranger, the timing chains and sprockets showed no signs of excessive wear and no oil sludge build up was evident. Even the timing chain guides were in good condition. The plastic guides had gotten brittle but that was due to heat and age, and nothing to do with oil breakdown. That was with a 20K mile oil change interval.
I am not suggesting anyone use an extended oil change interval. I just want to point out the importance of fine filtration with a bypass filtration system. I would never suggest using a 20K miles oil change interval even with a bypass filtration system on a turbo charged engine. However, I will most likely follow the oil change minder once I install a bypass micron filter system when I eventually buy a Ranger with an Ecoboost engine. I always use a full synthetic oil also.