User Manual - Page 365

For 2021 WRANGLER.

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SERVICING AND MAINTENANCE 363
Flush and replace the engine, intercooler (if equipped) coolant at
10 years or 150,000 miles (240,000 km) whichever comes first
X X
Change the manual transmission fluid if using your vehicle for any of
the following: trailer towing, snow plowing, heavy loading, taxi, police,
delivery service (commercial service), off-road, desert operation or
more than 50% of your driving is at sustained high speeds during hot
weather, above 90°F (32°C)
X X X X X
Change transfer case fluid if using your vehicle for any of the follow-
ing: police, taxi, fleet, or frequent trailer towing
X X
Inspect and replace PCV valve if necessary X
Change front and rear axle fluid if using your vehicle for police, taxi,
fleet, off-road or frequent trailer towing
X X X
1. The spark plug change interval is mileage based only; yearly intervals do not apply.
Mileage or time passed (whichever 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
8
21_JL_OM_EN_USC_t.book Page 363
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