I've used the sanitize setting on my dishwasher for quite a while now, and have had mixed results. Here's my process, though I'm going to tweak it with your oxiclean setup.
1. Rinse bottles as they are used. Alternately, for the bottles with the crud, rinse with hot water (I have no kids, and can set the water heater to 150 degrees) and scrub until you see no more crud inside.
2. Run through dishwasher with sanitize setting. I usually do this with about 6 bottles at a time (as we consume the beer), and store them until brew day.
3. On brew day, sanitize bottles using star san run through a vinator thingy, or dip soak them in a bucket full of star san.