Jeep grand cherokee 2018, Owner'S Manual

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Mileage or time passed (which-
ever comes first)
20,000 30,000 40,000 50,000 60,000 70,000 80,000 90,000
100,000 110,000 120,000 130,000 140,000 150,000
Or Years: 2 3 4 5 6 7 8 9 10 11 12 13 14 15
Or Kilometers:
32,000 48,000 64,000 80,000 96,000
112,000 128,000 144,000 160,000 176,000 192,000 208,000 224,000 240,000
Flush and replace the engine cool-
ant at 10 years or 150,000 miles
(240,000 km) whichever comes
first.
X X
Change transfer case fluid. X
Inspect and replace PCV valve if
necessary.
X
** The spark plug change interval is mileage based only,
yearly intervals do not apply.
430 SERVICING AND MAINTENANCE