I have a 2016 Honda CRV Touring that I purchased new and it now has 104,000 miles. In the owners manual, it shows that the maintenance minder code for changing the rear differential oil is B6 but I can't find any other information on when it should be changed. As I recall, I changed it at about 15000 miles per a reminder from the maintenance minder but I don't recall ever seeing another reminder to change it. Did I miss a reminder? Is there a recommendation to change it after x amount of miles from Honda that I haven't found? Thank you for any information!