Your fools for running oil threw your engines for 10k. Sucked in by what the manual says. Its just like saying 5w20 oil is better for the 4.6 but its really for fuel economy and is to thin at high rpms. Car manufacturers are being pushed into putting 10k+ changes into the manual because America wants to spend less and go green. I work at a car dealership and oil experts that have came in all admitted that all oil yes even your so great over hyped mobil 1 crap starts to break down around 4k but can be pushed a little more. Its to save us from drilling more for oil and save us money. Fools Fools!!!
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I'm not taking mine to 10k miles. I never said that I was. That is a maximum and can probably only be achieved under "perfect conditions". So don't worry about it so much buddy. Me running my oil a little longer than you do doesn't affect you. Also I don't use cheap oil.