I am going to go a bit further and add to
@LazSlate's post a bit.
I in theory understand and can partially get behind this statement. But not in reality. The only person who would stand behind this statement is an actual engineer. Anybody who actually works on things, whether that is cars, mechanical equipment, or electronics would disagree. Let's take it a bit further.
or BETTER. That would be how I would state that. What the manual and manufacturer recommends is the MINIMUM to meet the protection needs of the motor.
Now I would not use an oil specifically formulated for diesels, in my Ecoboosts, but some of those ALSO meet and exceed the specs for our motors. Do your homework.
Rule of thumb as far as conventional vs Synthetic. If it came with conventional, blended and full syn's are an upgrade, and will do great. If it came with blended, DO NOT run conventional, but Full Syn would also do great.
Ford generally uses blends in their motors, for 2 reasons, cheaper than Synthetic, and better protection than conventional under high heat and high pressure.
Currently mine are under maintenance from my dealer, so they get the recommended oil about every 5K. If I was doing in myself, they would be running Valvoline Full Syn.
Now as far as the weight. If you are in Texas, the 5W30 is fine. If you were tuning it, towing a bunch, running it hard in high heat situations, 5W40 would probably be a good thing. 0WXX would not benefit you.