So I think the dealer's oil is crappy. I know the weight is 5W-30, but the engine has has a startup rattle that started only about 1000 miles after they last changed it. Cutting them out now. Time to go Amsoil...
Dealer oil is Motorcraft SynBlend. Nothing at all wrong with it IMO. Does the rattle go away after start up? Sent from my iPhone 5 using Tapatalk