[Iso_QX60]

So, from what I have read, no one has ever replaced the transfer case oil as it is not mentioned in the manual (it only says "inspect the oil"). Most brands recommend changing the oil at 30-50K miles. Why wouldn't Infiniti/Nissan do the same? I have 2014 QX60 with 52K miles, want to replace the oil, but afraid dealer would not use right oil type or smth else will go wrong after that, as i have heared few owners experiencing problems after transfer case oil change. Any recommendations?:/