User Manual - Page 244

For 2020 JEEP WRANGLER.

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242 SERVICING AND MAINTENANCE
HEAVY DUTY USE OF THE VEHICLE
Change engine oil at 4,000 miles (6,500 km) or 350 hours of engine run time if the vehicle is operated in a dusty and off road environment or is operated predominately at idle or only
very low engine RPM. This type of vehicle use is considered Severe Duty.
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 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.
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
WARNING!
You can be badly injured working on or around a motor vehicle. Do only service work for which you have the knowledge and the right equipment. If you have any doubt about your
ability to perform a service job, take your vehicle to a competent mechanic.
Failure to properly inspect and maintain your vehicle could result in a component malfunction and effect vehicle handling and performance. This could cause an accident.
20_JL_OM_EN_USC_t.book Page 242
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