Jeep Wrangler2018 Owner's Manual page 421

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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, po-
lice, 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 follow-
ing: 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.
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SERVICING AND MAINTENANCE 419
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