NEVER use anything except 5-20 in that engine! The oil ports are small, and designed for a light oil.
If you're under the Ford warranty, play it safe and use Motocraft oil and filters.
By the way I had to put a new engine in my 2005 F150... I presumed that because I was towing a TT in in Florida in the summer's that I needed a heaver oil. Boy's was I wrong... that's when the mechanic explained how important it was only use 5-20 oil in those engines. I thanked him, paid the $ 780.00 for the rebuilt engine and went home poorer but wiser.
2016 Redhawk 26XD
Me, Dear Wife,
2 Bluetick Hounds
1 Newfoundland / Black Lab Mix
1 Cairn Terrier