Do you mean differential case instead of transfer case? The differential code "6" is usually around 15000 miles, then every 30000 miles. The transfer case is code "3" and usually around 60000 miles along with the transmission fluid from what I have read regarding the Maintenance Minder system on these and my 2019 Pilot AWD..
The differential also calls for DPSF-II (DPF-II is the same) and is even marked on the differential case by the fill plug.
The differential also calls for DPSF-II (DPF-II is the same) and is even marked on the differential case by the fill plug.