The second (and final) UOA for my truck is posted here. I had one done a year and a half ago and noticed that the viscosity had dropped more than I expected for such a short interval. This interval is even shorter, 2000 miles over 8 months. This is all short trips and cold starts in Alaska, though it is garaged. The previous oil, RGT, dropped out of grade in less than 3000 miles so I was expecting this oil sample to be a lower viscosity than what was found, even though I only drove it 2/3 the miles (however, only 20 hours less than for the previous sample). (115 hours on the RGT, 95 on this sample of M1 ESP). Both oils started at essentially the same viscosity. There is some difference in flashpoint, and perhaps that accounts for less gas in the oil on this sample due to less usage. As to the rest of the difference in viscosity? Somewhat less use, sure, but perhaps the M1 is just a better product and this accounts for less shearing? I have no idea. But, as I noted in the thread on the RGT sample ( https://bobistheoilguy.com/forums/t...100-miles-on-2020-f-150-2-7l-ecoboost.347955/ ) I just wanted to have a oil stay in grade between changes. I'll keep using the ESP for the next few years (I have a few jugs) and let it go a full year, which of course is not that many miles. Also, I noticed that the oil seemed quite opaque, sort of sooty looking compared to the previous SOPUS products that I had used.