Jeep Wrangler 2020 Owner's Manual page 475

NOTE:
Under no circumstances should oil change intervals exceed
10,000 miles (16,000 km), 12 months or 350 hours of engine
run time, whichever comes first. The 350 hours of engine run
or idle time is generally only a concern for fleet customers.
Severe Duty All Models
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.
SERVICING AND MAINTENANCE
Once A Month Or Before A Long Trip:
• Check the engine oil level.
• Check the windshield washer fluid level.
• Check the tire inflation pressures and look for unusual
wear or damage, rotate at the first sign of irregular wear.
• Check the fluid levels of the coolant reservoir, brake
master cylinder, and power steering, and fill as needed.
• Check the function of all interior and exterior lights.
473
7