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I just had the local Ford dealer change out the original oil (650 miles). I went with Mobil 1 5W-30 Extended Performance Full Synthetic. This will be my oil for the life of the vehicle. 5k intervals. Instantly the engine seems much less labored than before! Sounds smoother as well.

Wow, you must be hammered down taking advantage of sea level over there in H Town! :D

AWD Aviator Reserve here. 16.9 average mpg, mostly city driving. 500 miles in, haven't taken the revs past 5500 rpm.

I've been debating AMS Oil vs Mobile1. I know that AMS oil is superior to all other oils out there. Testing shows this to be true, however, Mobile1 is a more available option, and it's everywhere. Personally I think changing oil and filter every 5k is the way to go.

Thanks for chiming in. Why switch to Royal Purple now?

Thanks for your vote. Which Mobile1 type? There are several. I added the 2019 Lincoln Continental (3.0 TT V-6) to the vehicle search for "My Vehicles" because they didn't have the 2020 Explorer ST or Aviator as options in the Mobile1 oil selector.

New Aviator owner (same 3.0 TT V-6). Coming from BMW where oil tolerances and specifications are very particular, it does't seem that way with FoMoCo. I see that Motorcraft synthetic blend is recommended, but seems to me like a bare minimum especially when you start pushing more boost, timing...