My family has an F-150 3.5L Ecoboost, and a Ford Fusion 2.0L Ecoboost, both take 5W-30. My 3.5L naturally aspirated in the Explorer takes 5W-20, so I just buy 5W-30 oil for the family and put it in all 3. I've done this since 15,000 miles. The car is now at 90,000 miles. It's fine to run 5W-30...