Andy - good for you, let's keep in contact with each other. Can you share with me what's going on with your fuel? I hope you've reached out to Ford on that.
Jeff - let's see if this works - first time attaching. The only number of note is iron, hence why I'll swap now and trend. I hope it's not a cam lobe
To others - way back in the early 80s I was running Amsoil and extended intervals. I got my analysis for free because my bud bought all his oil from one shop and that was a service for him. On one car I actually put in one of the bypass filters - and sure enough the next interval it actually made the oil a little cleaner. That was a long time ago when with the research my other (engineer) bud was doing I realized I no longer needed to worry about synthetics. Whenever I own a car, once out of warranty I've switched to synthetics and extended drains. The only issue I had was a bearing knock on a Lincoln I got from my folks - shortly after getting said Lincoln the oil plug fell out of the pan (my wife immediately shut down and called me (oil light, arghh!). I found the plug - it was a 'repair' plug - they had stripped the pan threads. I towed it home and replaced the pan. The car ran fine for another 3 years until the bearing knock. When I ran extended intervals I used to change the filters at 5K, then 7.5K, then my (engineer) bud's research convinced me I was wasting my time since the filters were fully capable of running to 15K, expecially with today's cylinder wall quality, ring technology, filter size, efficiency, etc. BTW - the plug failure we called in our industry 'maintenance induced failures' - you got that right - the more we had them turn wrenches, the more chance of failures induced due to wrench turners - hence our strive for the right balance between doing when needed or unnecessary work where you set yourself up for someone to cause damage.
I'll try and remember to post my 5K sample (perhaps under a different heading). That will likely be a year or so.
See attached per your request, Jeff.