Let's say you just purchased a new car. How soon would you change your oil? Here's what I'm trying to understand. Somewhere or other, I read that it is not good to change your oil too soon because some the the "minute" metal particles that first wear off play an important role in the breaking in of a new engine. You know, sort of like polishing compound. If you drain them out too soon (say at 1000 miles), you are affecting the breaking in of the engine. Is this bogus info or what?