Well, I guess I'll stir the pot a little. I've changed the oil on my 03 four times since it was bought. The first three were during break-in, the first 18,000 miles. I didn't change again until I had 88,000 miles on the truck and only then because of an air box problem that allowed dust in. My oil analysis showed abnormal in silicon, the chemistry showed the oil was good for continued use but I dumped it. The truck now has almost 102,000 miles on it.
My last truck went 416k+ miles with no engine problems at all using extended drain intervals. I know most won't agree with what I do, but it works for me. I run a lot of miles, pulling a big trailer, it's how I make my living. My truck will be 1 yr old on the 14th of Feb.