Pressure Washing; Vehicle Maintenance; Engine Oil - Jeep WRANGLER 2023 Owner's Manual

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306
SERVICING AND MAINTENANCE
CAUTION!
If a "fast charger" is used while the battery is in
the vehicle, disconnect both vehicle battery cables
before connecting the charger to the battery. Do
not use a "fast charger" to provide starting voltage.
Vehicles with the Stop/Start system will be
equipped with two batteries. Both the main and
the supplemental batteries must be disconnected
to completely de-energize the 12 Volt electrical
system.
If the negative battery cables are not isolated prop-
erly it can cause a potential power spike or surge
in the system, resulting in damage to essential
electrical components.

PRESSURE WASHING

Cleaning the engine compartment with a high pressure
washer is not recommended.
CAUTION!
Precautions have been taken to safeguard all parts
and connections however, the pressures generated
by these machines is such that complete protection
against water ingress cannot be guaranteed.

VEHICLE MAINTENANCE

An authorized dealer has the qualified service person-
nel, special tools, and equipment to perform all service
operations in an expert manner. Service Manuals are
available which include detailed service information for
your vehicle. Refer to these Service Manuals before
attempting any procedure yourself.
NOTE:
Intentional tampering with emissions control systems
may void your warranty and could result in civil penal-
ties being assessed against you.
WARNING!
You can be badly injured working on or around a
motor vehicle. Only do service work for which you
have the knowledge and the proper equipment. If you
have any doubt about your ability to perform a service
job, take your vehicle to a competent mechanic.

ENGINE OIL

Engine Oil Selection
For engine oil selection
page 361.
American Petroleum Institute (API)
Approved Engine Oil
These symbols mean that the oil has been certified by
the API. The manufacturer only recommends API trade-
mark oils.
The API Starburst trademark certifies
0W-20, 0W-30 and 5W-30 engine oils.
The API Donut trademark certifies
0W-40 and 5W-40 engine oil.
CAUTION!
Do not use chemical flushes in your engine oil as the
chemicals can damage your engine. Such damage is
not covered by the New Vehicle Limited Warranty.
Synthetic Engine Oils
Your engine was designed for synthetic engine oils, only
use synthetic API approved engine oils.
Synthetic engine oils which do not have both the correct
API trademark and the correct SAE viscosity grade num-
bers should not be used.
Materials Added To Engine Oil
The manufacturer strongly recommends against the
addition of any additives (other than leak detection
dyes) to the engine oil. Engine oil is an engineered prod-
uct and its performance may be impaired by supple-
mental additives.
Disposing Of Used Engine Oil And Oil
Filters
Care should be taken in disposing of used engine oil
and oil filters from your vehicle. Used oil and oil filters,
indiscriminately discarded, can present a problem to
the environment. Contact an authorized dealer, service
station or governmental agency for advice on how and
where used oil and oil filters can be safely discarded in
your area.

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