I got Amsoil. You can run it 15k miles and most of the time it will last beyond that. It cost about $75.00 for oil and filter shipped.
Talk to "TheOtherNick" about this. He sells it.
Because Mobil 1 is like 5k miles and that's almost a 50.00 every time you buy it and change it yourself. Why buy Mobil 3 times in 15k when you can save yourself $75.00 bux and buy it once for 15k miles worth of coverage.