RAM 1500 Owner's Manual page 882

880 MAINTENANCE SCHEDULES
Mileage or time passed
(whichever comes first)
Or Years:
Or Kilometers:
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 7 8 9 10
X
11 12 13 14
X
15