Dodge 2015 RAM Owner's Manual page 128

126 MAINTENANCE SCHEDULE
Mileage or time passed (whichever comes
Replace accessory drive belt(s).
Inspect the transfer case fluid, change for any of
the following: police, taxi, fleet, or frequent trailer
towing.
Change transfer case fluid.
first)
Or Years: 1 2
Or Kilometers:
3 4 5 6 7 8
X
9 10 11 12 13
X
X
X
14 15