Got some Castrol Edge 0w-20 (black bottle) for my 3.5 Ecoboost, and threw in a can of Liqui Moly Molybdenum additive in the engine just because I got like 8 cans of it for dirt cheap on eBay.
Also got some Fram Ultra Synthetic XG10575, direct alternative to Motorcraft FL500S.
Do you think that additive actually does anything?