I never thought to google a question about a Amsoil filters (who'd of thunk it) but special agent LW did the legwork. Well, it looks as though the Amsoil products are still superior to this day so I'll continue to purchase.
As far as the oil analysis, I haven't done one to this car yet. I used other peoples' results on this platform but do it earlier rather than later. I have 20k changes on an old 2003 vulcan engine taurus with results on that, oil was ok. According to some diesel articles I've read a while ago, oil basically doesn't break down. Its usefulness is limited by the contamination it receives and is extended through proper filtration. That's why the filter is of utmost importance.
One last thing and that is the manual says that 10k changes are ok but I'm not so sure. Generally, there isn't a lot of money made by Ford (or any other brand) on the initial purchase of a vehicle itself. The money is made by future repairs and the selling of parts. So with that in mind, vehicles need to be repaired often for it to be profitable; hence PTU lifetime of the car without service. Another example, lifetime transmission fluids (think German cars) in cars. So when a vehicle is sold to someone else at 100k miles...boom to the next purchaser of that car. That's a big bill right there.
Point is I'm not so sure about factory recommended oil changes for longevity.