For those that think they are smarter than the factory engineers. Have you ever considered having an oil sample analyzed to see whether or not you actually need to change your oil at 3000 miles, 5000 miles? Remember that this engine holds TWO GALLONS of oil, 30% more than the 4.6 cars held.
Unless your engine has a lot of miles, you use garbage oil or you just beat the daylights out of the car then I think you're probably wasting your money. I have an oil sample bottle sitting on the shelf in the shop and will be sending out a sample on the next oil change, when the car tells me to change it.