That's Honda's recommendation, roughly. Techically you cant take it 0-5%, and maintain your warranty, but that's pushing it to the limit. The mileage that equates to will depend upon your driving conditions, etc. Of course, you're free to change it early, although the dealers are reluctant to do that. I'm not quite sure what "Honda Blended Oil" is, I assume that's just oil with Honda's name on the container. Its supplied by one of the major oil makers, to Honda's spec. I drive all highway, so my civic says I can go about 12-13k per oil change. I'm not brave enough to do that, so I change it at 50%, don't reset it, and again when it gets to about 10% and reset it.