I have 3 free-ish changes coming from my dealer which I intend to get at 5k, 10k, and 15k.
I don't see the point in skimping on oil if you do your own changes. The difference between the recommended MotorCraft oil and Wal Mart's store brand conventional is less than 5 bucks a jug.
After that my intention is to run Mobil 1 for 10K OCI's -if- I can get away without changing the filter. If I'm taking that stupid cover off to change the filter then I will just chainge the oil when I have it apart.