2015, the spec is not in my manual, it is gear oil, see your dealer for the spec. (can’t remember)
Talked with Service Advisor a week before appointment for B service including changing fluid in front diff and transfer case. He assured me everything would be in stock and ready for the service.
During the service, they informed me they did not have the gear oil (shipped in next day) and also did not have the sealing washer for the transfer case. (7 days from Germany) Found an aluminum washer at the local Mazda dealer for them (exact match), and was on my way. (they did have the washer for the front diff)