User Manual - Page 310

For 2020 Wrangler.

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308 SERVICING AND MAINTENANCE
Change transfer case fluid if using
your vehicle for any of the following:
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.
2. 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
20_JL_OM_EN_USC_t.book Page 308
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