Jeep Wrangler 2020 Owner's Manual page 481

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.
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 consid-
ered Severe Duty.
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