Jeep Wrangler 2018 User Manual page 206

Mileage or time passed
(whichever comes first)
Or Months:
Or Kilometers:
Flush and replace the engine cool-
ant at 10 years or 150,000 miles
(240,000 km) whichever comes
first.
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. ****
* See "Severe Duty Conditions" in this section.
** DOT 4 brake fluid is time based only;
mileage intervals do not apply.
*** The spark plug change interval is mileage
based only, yearly intervals do not apply.
**** This maintenance is recommended by
the manufacturer to the owner, but is not
required to maintain emissions warranty.
204
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• 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 com-
petent mechanic.
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X
X
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WARNING!
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X
WARNING!
• 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.
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