RAM 1500 Owner's Manual page 723

Mileage or time passed
(whichever comes first)
Or Years:
Or Kilometers:
Change transfer case fluid if us-
ing your vehicle for any of the
following: police, taxi, fleet, or
frequent trailer towing.
Change the transfer case fluid.
Inspect and replace PCV valve if
necessary.
** The spark plug change interval is mileage based only,
yearly intervals do not apply.
2 3 4 5 6
X
MAINTENANCE SCHEDULES 721
7 8 9 10 11
X
M
A
N
N
12 13 14 15
A
N
C
C
H
D
X
U
I
T
E
E
S
E
L
E
S
8