It depends on what you're using the oil in.
If it is an Ecoboost, your choices are: Motorcraft Semi syn or full syn in the proper weight; Pennzoil Platinum or Ultra because they are HTO-06 certified (this is a rather rigorous spec Acura developed for their turbo engines, and to me represents an advantage), Mobil 1 which is HTO-06 certified as well. Ford used MC semi syn in the "Hero" engine so I imagine that any semi syn meeting Ford's spec WSS-M2C929-A would be OK. There are lots of oil on the shelf that meets this requirement, it all boils down to what brand you like and how much$$$$ you are willing to spend.
The rest of the engines in Ford's line up require the M2C929-A as well but since they are not turbocharged you could go conventional, semi sun or full syn that has that spec.
This kind of question could go on forever, but the truth is if you use an oil that has Ford's required certifications you are good to go.
If you'd like to start a nuclear war, start a thread about how miles before you change your oil - that one really starts the passion flowing!
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