This is my 2nd UOA for this vehicle. The ff oc was at 2,000 mi. The next oil change was dealer done at 2,000 mi. for 3,200 miles. Then the Mobil 1 oil went in at 5,200 mi, the UOA went til 12,200 mi, 7,000 mi on the oil. This UOA of Motorcraft went till 16,475 mi, 4,275 miles on the oil. This was a more realistic UOA of actual "everyday" driving, including the use of the remote starts to warm up the vehicle and melt the windshield ice. I wanted to get to a 5,000 mi OC but if I wanted to change the oil myself I had to do it when I did, before winter really happened here a couple of days afterwards. The thing that stands out is the drop in viscosity from a 30 weight to a 20 weight. Yet it doesn't appear that it was from fuel dilution, maybe some, but the flashpoint was still good. Perhaps the DI and Turbo do shear the oil even without fuel dilution. The TBN was still a respectable 3.6 even with the sheared oil. The iOLM for this change at 4,275 miles was 58%. The next UOA is Mobil 1 5W-30 which was installed after this oil and I'll do an UOA when I drain it in the spring. From then on I'll use Mobil 1 as I have quite a few changes worth of it at this point in time.
Whimsey