Hi. I've been doing a fairly obsessive amount of research on what I want to run on our 2019 Forester. First oil change is coming up. I've never owned a car with so many oil mysteries that can't seem to be agreed upon. There is the oil filter bypass PSI issue and the new DI and possible fuel dilution and fouled intake valve concerns. There are also reports of square filter gaskets leaking. I finally jumped the first hurdle and just ordered 4 OEM Subaru filters and crush washers. My second choice would have been the WIX 7055, but it has a square gasket. The high end option would be the Tokyo Roki filter made for the Mazda RX-8. This would be a very similar filter to the one that comes on the car from Japan. These are a good deal more expensive and I liked getting the washers in the package. So now I need to settle on an oil. My main concerns are fuel dilution and whether the oil contributes to intake valve fouling due to recirculated crankcase gasses containing oil. There is a great deal of conjecture as to whether low NOACK is vital for the valve issues. Some say that it reduces vaporized oil in the intake gasses. Others say that the offending oil is actually a mist, not a vapor, and that low NOACK isn't a magic bullet. Then we get to calcium numbers and calcium vs magnesium and sulfated ash numbers. What do you think about PAO vs GTL for fuel dilution? If I wasn't obsessing I'd run down to WM tomorrow and grab a jug of Mobil 1 Extended Performance in 0w-20. I still just might do that. Does anyone have any personal insight or preference in this specific situation? I also think I'll order a Fumoto for this one. Because the filter is right on top, I wouldn't have to use ramps at all. Anyway, what oil should I use?