Agree with folks that the first diff change is supposed to happen later at 24K miles. That said, I did mine at 600 miles with the break-in oil change (literally when I got home from buying it new at Honda of Russellville in Arkansas). So far it has not burst into flames or otherwise objected to that error from 2014. :duck:
I'm really, really surprised/impressed that this has not yet degraded into a discussion of what TYPE of oil we each prefer. :poke: