Low oil engine pressure

Have you had engine base oil pressure actually tested? Rough running and noise can be related to engine misfire that requires diagnostic testing. Ensuring that the proper grade of oil (5W20) and high quality (Ford) oil filter are being used is a good start as well. There would be no reason to suspect oil pressure as a concern as a guess without other symptoms related such as a red oil light coming on, or other evidence of oil starvation. https://repairpal.com/repair-shops/lincoln-repair-and-service-in-san-antonio-texas