Jeep GLADIATOR 2020 Owner's Manual page 315

Mileage or time passed (whichever comes first)
Or Years:
Or Kilometers:
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).
Change transfer case fluid if using your vehicle for any of
the following: police, taxi, fleet, or frequent trailer towing.
Inspect and replace PCV valve if necessary.
Change front and rear axle fluid if using your vehicle for
police, taxi, fleet, off-road or frequent trailer towing.
1. The spark plug change interval is mileage based only, yearly intervals do not apply.
2 3 4 5 6
X X
X
X
SERVICING AND MAINTENANCE
7 8 9 10 11
X
X
X
313
12 13 14 15
X X
7
X
X