Like someone said, if u do a search u could read on this for a long time. Type of oil/filter/intervals/who does the oil change. I let the dealer change mine but bring my own Mobil 1, and I let them use their Motorcraft filter. Change it every 5000 miles
Ok I feel silly but never thought to bring my own. I have a track pack GT and 5w50 is recommended. I'm at 3800 miles and was just getting ready to take it in for the first change... completely expected to get nailed on the cost of 5w50 so just might BYOO!