Changed the oil and filter, using Amsoil for both. Last time and this time I used the premium Signature series, and I went just over 10,000 miles on the first fill. Signature series claims to be good for up to 25K miles or 1 year, but I'm conservative and the first fill was near the 1–year limit anyway. Will probably stick to 10K miles between changes.
When I drained this first fill, it didn't look or smell too bad after 10K miles. It was comparable to how an old-style conventional oil would look after 3K. No evidence of debris, coolant, or fuel dilution.
The Ranger used or maybe seeped (don't see any evidence of oil leaks so far) about 1/2 quart of oil over the 10,000 miles, based on dipstick checks. After 113,000 miles I cannot complain. The CarFax report suggests the oil wasn't changed quite as often before I bought the truck as it should have been.
The Amsoil oil filter is US–made (marked with that on the end) and seems to be pretty robust. I'm curious to find who makes these filters for them. Maybe that's a good question for BobIsTheOilGuy (BITOG).

But I'm not obsessed like some of those members are, so no oil analysis or cutting open the old filter.