Probably can be... but the Motorcraft 5w50 seems to be good stuff so why change?
From the Mobil1 spec sheet, "Mobil 1™ Supercar Motor Oils are recommended by ExxonMobil for General Motors dexosR applications, including high-performance naturally aspirated, turbo-charged, and super-charged gasoline engines." Kinda odd, IMHO, that the spec sheet says that but the marketing guys add "supercar" prominently on the label.