I run my car daily and drive her pretty hard. I did my last oil change with 5W-30 Motorcraft semi synthetic oil and a motorcraft filter. What is the best I can put in her besides royal purple or amsoil. I dont want to have to purchase my oil online. I heard that the motorcraft filters were good as well as their oil. Could I do any better? Mobil 1 with a puralator filter? Thanks a bunch.