Thought I would jump in on 2 points here.
First, and this one is critical, when you remove your old oil filter, make absolutely sure the gasket came off with it. I have a friend who works at a major oil change shop and he says he sees them stick to the block all the time. If you put the new filter on with the old gasket still in place, it will likely blow the gasket out and you are in big trouble.
Second, my brother has connections with Mobil, and he worked with them and GM (I know) to do a 100K test using Mobil 1. They tore down a brand new motor and recorded all of the specs on bearing races and clearances. They then put 100K miles on the motor in NYC Taxi service giving it 5K mile oil changes with Mobil 1. They tore the motor down again at 100K miles and the amount of wear was virtually unmeasurable.
In my books that says a ton about the impact synthetic oil can have, and especially Mobil 1. I use it in all my vehicles including my boat and my motorcycle. My ex has my old 98 5.4 Expedition with over 150K miles on it and it runs and sounds like new. Of course her new husband isn't using Mobile 1 in it any more so who knows what happens now. Maybe it will only make it to 200K
07 F150 Lariat 5.4