Not to start a huge debat with ya gravel rat, but I know i have never pumped out my hpop, eventually gonna replace it with one from a super duty when I do new injectors and turbo, but 235k miles with rotella and no problems yet. My uncle has 300k on his 97 just doing oil changes with either Rotella or Archer 15 w 40. I dont think the little bit of oil in the hpop is gonna hurt the injectors. They are only what 150-200k service life anyway so anything beyond that is bonus the way I see it. My mom's uncle is a service manager for the international/navistar dealer here and advises me on a lot of the stuff we do on trucks (I have 3 7.3 psds and a 7.3 IDI) and has never mentioned draining the hpop. To the op, rotella 15 W 40 every 4-5k on a 7.3 and you should be good to go for a while.