JEEP GLADIATOR 2023 Owners Manual

TECHNICAL SPECIFICATIONS419
Tighten the lug nuts/bolts in a star pattern until
each nut/bolt has been tightened twice. Ensure
that the socket is fully engaged on the lug nut/bolt
(do not insert it halfway).

Torque Patterns

After 25 miles (40 km), check the lug nut/bolt
torque to be sure that all the lug nuts/bolts are
properly seated against the wheel.
FUEL REQUIREMENTS — GASOLINE ENGINE
While operating on gasoline with the required
octane number, hearing a light knocking sound
from the engine is not a cause for concern.
However, if the engine is heard making a heavy
knocking sound, see an authorized dealer
immediately. Use of gasoline with an octane
number lower than recommended can cause
engine failure and may void the New Vehicle
Limited Warranty.
Poor quality gasoline can cause problems such as
hard starting, stalling, and hesitations. If you
experience these symptoms, try another brand of
gasoline before considering service for the vehicle.
3.6L ENGINE
This engine is designed to meet all
emission regulations and provide
excellent fuel economy and performance
when using high-quality unleaded regular
gasoline having an octane rating of 87 as specified
by the (R+M)/2 method. The use of higher octane
premium gasoline will not provide any benefit over
regular gasoline in these engines.
REFORMULATED GASOLINE
Many areas of the country require the use of
cleaner-burning gasoline referred to as
“reformulated gasoline”. Reformulated gasoline contains oxygenates and are specifically blended
to reduce vehicle emissions and improve air
quality.
The use of reformulated gasoline is recommended.
Properly blended reformulated gasoline will
provide improved performance and durability of
engine and fuel system components.
MATERIALS ADDED TO FUEL
Besides using unleaded gasoline with the proper
octane rating, gasolines that contain detergents,
corrosion and stability additives are
recommended. Using gasolines that have these
additives will help improve fuel economy, reduce
emissions, and maintain vehicle performance.
Designated TOP TIER Detergent Gasoline
contains a higher level of detergents to
further aide in minimizing engine and
fuel system deposits. When available,
the usage of TOP TIER Detergent Gasoline is
recommended. Visit www.toptiergas.com for a list
of TOP TIER Detergent Gasoline retailers.
Indiscriminate use of fuel system cleaning agents
should be avoided. Many of these materials
intended for gum and varnish removal may contain
active solvents or similar ingredients. These can
harm fuel system gasket and diaphragm materials.
WARNING!
To avoid the risk of forcing the vehicle off the
jack, do not tighten the lug nuts/bolts fully until
the vehicle has been lowered. Failure to follow
this warning may result in personal injury.9

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420TECHNICAL SPECIFICATIONS
(Continued)
GASOLINE/OXYGENATE BLENDS
Some fuel suppliers blend unleaded gasoline with
oxygenates such as ethanol.
Problems that result from using gasoline
containing more than 15% ethanol (E-15) or
gasoline containing methanol are not the
responsibility of the manufacturer and may void
the New Vehicle Limited Warranty.
DO NOT USE E-85 IN NON-FLEX FUEL
V
EHICLES
Non-Flex Fuel Vehicles (FFV) are compatible with
gasoline containing up to 15% ethanol (E-15). Use
of gasoline with higher ethanol content may void
the New Vehicle Limited Warranty. If a Non-FFV vehicle is inadvertently fueled with
E-85 fuel, the engine will have some or all of these
symptoms:
Operate in a lean mode.
OBD II Malfunction Indicator Light on.
Poor engine performance.
Poor cold start and cold drivability.
Increased risk for fuel system component corro
-
sion.
CNG AND LP FUEL SYSTEM
M
ODIFICATIONS
Modifications that allow the engine to run on
Compressed Natural Gas (CNG) or Liquid Propane
(LP) may result in damage to the engine,
emissions, and fuel system components. Problems
that result from running CNG or LP are not the
responsibility of the manufacturer and may void
the New Vehicle Limited Warranty.
METHYLCYCLOPENTADIENYL
M
ANGANESE TRICARBONYL (MMT) IN
G
ASOLINE
MMT is a manganese-containing metallic additive
that is blended into some gasolines to increase
octane. Gasoline blended with MMT provides no
performance advantage beyond gasoline of the
same octane number without MMT. Gasoline blended with MMT reduces spark plug life and
reduces emissions system performance in some
vehicles. The manufacturer recommends that
gasoline without MMT be used in your vehicle. The
MMT content of gasoline may not be indicated on
the gasoline pump; therefore, you should ask your
gasoline retailer whether the gasoline contains
MMT. MMT is prohibited in Federal law and
California reformulated gasoline.
FUEL SYSTEM CAUTIONS
CAUTION!
DO NOT use E-85, gasoline containing methanol,
or gasoline containing more than 15% ethanol
(E-15). Use of these blends may result in starting
and drivability problems, damage critical fuel
system components, cause emissions to exceed
the applicable standard, and/or cause the
Malfunction Indicator Light to illuminate. Please
observe pump labels as they should clearly
communicate if a fuel contains greater than
15% ethanol (E-15).
CAUTION!
Follow these guidelines to maintain your
vehicle’s performance:
The use of leaded gasoline is prohibited by
Federal law. Using leaded gasoline can impair
engine performance and damage the emis
-
sions control system.
An out-of-tune engine, certain fuel or ignition
malfunctions can cause the catalytic
converter to overheat. If you notice a pungent
burning odor or some light smoke, your engine
may be out-of-tune or malfunctioning and may
require immediate service. Contact an autho -
rized dealer for service assistance.

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TECHNICAL SPECIFICATIONS421
NOTE:Intentional tampering with the emissions control
system can result in civil penalties being assessed
against you.
FUEL REQUIREMENTS – DIESEL ENGINE
Federal law requires that you must fuel this vehicle
with Ultra Low Sulfur Highway Diesel fuel (15 ppm
Sulfur maximum) and prohibits the use of Low
Sulfur Highway Diesel fuel (500 ppm Sulfur
maximum) to avoid damage to the emissions
control system.
Use good quality diesel fuel from a reputable
supplier in your vehicle. For most year-round
service, Number 2 diesel fuel meeting ASTM
(formerly known as the American Society for
Testing and Materials) specification D-975 Grade
S15 will provide good performance. If the vehicle is exposed to extreme cold (below 20°F or -7°C), or
is required to operate at colder-than-normal
conditions for prolonged periods, use climatized
Number 2 diesel fuel or dilute the Number 2 diesel
fuel with 50% Number 1 diesel fuel. This will
provide better protection from fuel gelling or
wax-plugging of the fuel filters.
Diesel fuel is seldom completely free of water. To
prevent fuel system trouble, drain the
accumulated water from the fuel/water separator
using the fuel/water separator drain provided on
the fuel filter housing. If you buy good quality fuel
and follow the listed cold weather
recommendations, fuel conditioners should not be
required in your vehicle. If available in your area, a
high cetane “premium” diesel fuel may offer
improved cold-starting and warm-up performance.
DIESEL FUEL SPECIFICATIONS
This diesel engine has been developed to take
advantage of the high energy content and
generally lower cost Number 2 Ultra Low Sulfur
diesel fuel or Number 2 Ultra Low Sulfur climatized
diesel fuels.
NOTE:
If you accidentally fill the fuel tank with gasoline
or DEF on your diesel vehicle, do not start the
engine. Damage to the engine and fuel system
could occur. Please call an authorized dealer for
service.
A maximum blend of 5% biodiesel meeting
ASTM specification D-975 may be used with
your diesel engine without any adjustments to
regular service schedules.
Commercially available fuel additives are not
necessary for the proper operation of your
diesel engine.
Number 1 Ultra Low Sulfur diesel fuel should
only be used where extended arctic conditions
(-10°F or -23°C) exist.
The use of fuel additives, which are now being
sold as octane enhancers, is not recom
-
mended. Most of these products contain high
concentrations of methanol. Fuel system
damage or vehicle performance problems
resulting from the use of such fuels or addi -
tives is not the responsibility of The manufac -
turer and may void or not be covered under
the New Vehicle Limited Warranty.
CAUTION!
WARNING!
Do not use alcohol or gasoline as a fuel blending
agent. They can be unstable under certain
conditions and hazardous or explosive when
mixed with diesel fuel.
CAUTION!
If the Water in Fuel Indicator Light remains on,
DO NOT START engine before you drain the water
from the fuel filter(s) to avoid engine damage
Ú page 368.
9

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422TECHNICAL SPECIFICATIONS
BIODIESEL FUEL REQUIREMENTS
A maximum blend of 5% biodiesel meeting ASTM
specification D975 is recommended for use with
your diesel engine. If frequent operation with
biodiesel blends that are between 6% and 20%
(B6–B20) is desired, the maintenance schedule is
subject to shorter intervals.
The oil and filter change along with fuel filter
replacement is subject to shorter intervals when
operating your engine on biodiesel greater than
5%. Do not use biodiesel greater than 20%.
For regular use of biodiesel blends between 6%
and 20% (B6–B20) it is important that you
understand and comply with these requirements
Úpage 358.
Biodiesel is a fuel produced from renewable
resources typically derived from animal fat,
rapeseed oil (Rapeseed Methyl Ester (RME) base),
or soybean oil (Soy Methyl Ester (SME or SOME)
base). Biodiesel fuel has inherent limitations which
require that you understand and adhere to the
following requirements if you use blends of
biodiesel between 6% and 20% (B6–B20). There
are no unique restrictions for the use of B5.
Biodiesel Fuel Properties — Low Ambient
Temperatures
Biodiesel fuel may gel or solidify at low ambient
temperatures, which may pose problems for both
storage and operation. Precautions can be
necessary at low ambient temperatures, such as
storing the fuel in a heated building or a heated
storage tank, or using cold temperature additives.
Fuel Quality — Must Comply With ASTM
Standards
The quality of Biodiesel fuel may vary widely. Only
fuel produced by a BQ9000 supplier to the
following specifications may be blended to meet
biodiesel blend B6 – B20 fuel meeting ASTM
specification D-7467:
Petrodiesel fuel meeting ASTM specification
D-975 and biodiesel fuel (B100) meeting ASTM
specification D-6751
Fuel Oxidation Stability — Must Use Fuel
Within Six Months Of Manufacture
Biodiesel fuel has poor oxidation stability which
can result in long term storage problems. Fuel
produced to approved ASTM standards, if stored
properly, provides for protection against fuel
oxidation for up to six months.
CAUTION!
Failure to comply with Oil Change requirements
for vehicles operating on biodiesel blends
between 6% and 20% (B6–B20) will result in
premature engine wear. Such wear is not
covered by the New Vehicle Limited Warranty.
CAUTION!
Use of blends greater than 20% is not approved.
Use of blends greater than 20% can result in
engine damage. Such damage is not covered by
the New Vehicle Limited Warranty.
CAUTION!
In the event that the vehicle is filled with
biodiesel and not used for more than a month,
the fuel should either be used up by driving (up
to quarter tank) and filled with standard diesel
blends with less than 5% that is normally
available. This will help prevent the fuel filter
clogging and potential damage to the fuel
injection system due to degraded biodiesel,
which is not covered by the New Vehicle Limited
Warranty.

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TECHNICAL SPECIFICATIONS423
Fuel Water Separation — Must Use
Mopar® Approved Fuel Filter Elements
Biodiesel fuel has a natural affinity to water and
water accelerates microbial growth. Your Mopar®
filtration system is designed to provide adequate
fuel water separation capabilities.
Fuel In Oil Dilution — Must Adhere To
Required Oil Change Interval
Fuel dilution of lubricating oil has been observed
with the use of biodiesel fuel. Fuel in oil must not
exceed 5%. To ensure this limit is met your oil
change interval must be maintained within the
suggested schedule. The regular use of biodiesel
between 6% and 20% requires intervals shorter
than the outlined 10,000 miles (16,000 km) and must not exceed the suggested schedule. When
routinely operating on biodiesel between 6% and
20%, oil and filter replacement intervals must not
exceed 8,000 miles (13,000 km) or six months,
which ever comes first.
Biodiesel Fuel Filter Change Intervals
The use of biodiesel requires more frequent fuel
filter change intervals. When operating on
biodiesel between 6% and 20%, fuel filter
replacement intervals should be every second oil
change, and must not exceed 16,000 miles
(25,750 km).
NOTE:Under no circumstances should oil change
intervals exceed 8,000 miles (12,875 km) or six
months, if regular operation occurs with 6% - 20%
biodiesel blends. Under no circumstances should
fuel filter replacement intervals exceed every
second oil change and must not exceed
16,000 miles (25,750 km), if regular operation
occurs with 6% - 20% biodiesel blends. Failure to
comply with these Oil Change and fuel filter
requirements for vehicles operating on biodiesel
blends up to B20 may result in premature engine
wear. Such wear is not covered by the New Vehicle
Limited Warranty. The engine may suffer severe
damage if operated with concentrations of
biodiesel higher than 20%.
FLUID CAPACITIES
US
Metric
Fuel (Approximate)
3.6L Gasoline Engine 22.0 gal83.0 L
Engine Oil with Filter
3.6L Gasoline Engine 5.0 qt4.7 L
Cooling System *
3.6L Gasoline Engine 13.0 qt12.3 L
*Includes coolant recovery bottle filled to MAX level.
9

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424TECHNICAL SPECIFICATIONS
ENGINE FLUIDS AND LUBRICANTS
USMetric
Fuel (Approximate)
3.0L Diesel Engine 19.0 gal72.0 L
Diesel Exhaust Fluid Tank 5.1 gal19.3 L
Engine Oil With Filter
3.0L Diesel Engine 9.0 qt8.5 L
Cooling System
3.0L Diesel Engine 14.5 qt13.7 L
Component Fluid, Lubricant, or Genuine Part

Engine Coolant
We recommend using Mopar® Antifreeze/Coolant 10 Year/150,000 Mile
(240,000 km) Formula OAT (Organic Additive Technology) or equivalent
meeting the requirements of the manufacturer Material Standard MS.90032.
Engine Oil — 3.6L Gasoline Engine We recommend using Mopar® SAE 0W-20 Full Synthetic Engine Oil which
meets the requirements of the manufacturer Material Standard MS-6395.
Equivalent full synthetic SAE 0W-20 engine oil can be used but must have the
API Starburst trademark Ú
page 366.
Fuel Selection — 3.6L Gasoline Engine 87 Octane (R+M)/2 Method, 0-15% Ethanol.

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TECHNICAL SPECIFICATIONS425
CAUTION!
Mixing of engine coolant (antifreeze) other than specified Organic Additive Technology (OAT) engine coolant (antifreeze), may result in engine damage and
may decrease corrosion protection. Organic Additive Technology (OAT) engine coolant is different and should not be mixed with Hybrid Organic Additive Tech -
nology (HOAT) engine coolant (antifreeze) or any “globally compatible” coolant (antifreeze). If a non-OAT engine coolant (antifreeze) is introduced into the
cooling system in an emergency, the cooling system will need to be drained, flushed, and refilled with fresh OAT coolant (conforming to MS.90032), by an
authorized dealer as soon as possible.
Do not use water alone or alcohol-based engine coolant (antifreeze) products. Do not use additional rust inhibitors or antirust products, as they may not be
compatible with the radiator engine coolant and may clog the radiator.
This vehicle has not been designed for use with propylene glycol-based engine coolant (antifreeze). Use of propylene glycol-based engine coolant (antifreeze)
is not recommended.
Component Fluid, Lubricant, or Genuine Part
Engine Coolant We recommend using Mopar® Antifreeze/Coolant 10 Year/150,000 Mile
(240,000 km) Formula OAT (Organic Additive Technology) or equivalent
meeting the requirements of the manufacturer Material Standard MS.90032.
Engine Oil — 3.0L Diesel Engine We recommend using Mopar® API Certified SAE 5W-40 Full Synthetic Engine
Oil which meets the requirements of the manufacturer Material Standard
MS-12991. Equivalent full synthetic SAE 5W-40 engine oil can be used but
must be compliant to API SN/SP and ACEA A3/B4 specifications
Úpage 366.
Fuel Filters — 3.0L Diesel Engine We recommend using Mopar® Fuel Filter. Must meet 3 micron rating.
Using a
fuel filter that does not meet the manufacturer filtration and water separating
requirements can severely impact fuel system life and reliability.
9

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426TECHNICAL SPECIFICATIONS
NOTE:If the vehicle is exposed to extreme cold (below 20°F or -7°C), or is required to operate at colder-than-normal conditions for prolonged periods, use climatized
Number 2 diesel fuel or dilute the Number 2 diesel fuel with 50% Number 1 diesel fuel. This will provide better protection from fuel gelling or wax-plugging of the
fuel filters.Fuel Selection — 3.0L Diesel Engine
Use good quality diesel fuel from a reputable supplier in your vehicle. Federal
law requires that you must fuel this vehicle with Ultra Low Sulfur Highway
Diesel fuel (15 ppm Sulfur maximum) and prohibits the use of Low Sulfur
Highway Diesel fuel (500 ppm Sulfur maximum) to avoid damage to the
emissions control system. For most year-round service, Number 2 diesel fuel
meeting ASTM specification D-975 Grade S15 will provide good performance.
We recommend you use a blend of up to 5% biodiesel, meeting ASTM
specification D-975 with your diesel engine.
This vehicle is compatible with biodiesel blends greater than 5% but no
greater than 20% biodiesel meeting ASTM specification D-7467 provided the
shortened maintenance intervals are followed as directed.
Diesel Exhaust Fluid — 3.0L Diesel Engine Mopar® Diesel Exhaust Fluid (DEF)(API Certified) or equivalent that has been
API Certified to the ISO 22241 standard. Use of fluids not API Certified to ISO
22241 may result in system damage.
Component
Fluid, Lubricant, or Genuine Part

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TECHNICAL SPECIFICATIONS427
CHASSIS FLUIDS AND LUBRICANTS
Component Fluid, Lubricant, or Genuine Part

Automatic Transmission – If Equipped
Use only Mopar® ZF 8 & 9 Speed ATF Automatic Transmission Fluid or
equivalent. Failure to use the correct fluid may affect the function or
performance of your transmission.
Manual Transmission – If Equipped We recommend using Mopar® ATF+4 Automatic Transmission Fluid.
Transfer Case We recommend using Mopar® ATF+4 Automatic Transmission Fluid.
Front Axle Differential We recommend using Mopar® Gear & Axle Lubricant (SAE 75W85) (API GL-5).
Rear Axle Differential (M220 Sales Codes DRE/DRF) We recommend using Mopar® Gear & Axle Lubricant (SAE 75W85) (API GL-5).
Models equipped with Trac-Lok Limited Slip Differential require a friction
modifier additive.
Brake Master Cylinder We recommend using Mopar® DOT 3 Brake Fluid, SAE J1703.
Power Steering Reservoir We recommend using Mopar® Electric Steering Pump Fluid.
9

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428
CUSTOMER ASSISTANCE
SUGGESTIONS FOR OBTAINING SERVICE
FOR YOUR VEHICLE
PREPARE FOR THE APPOINTMENT
All work to be performed may not be covered by the
warranty. Discuss additional charges with the
service manager. Keep a maintenance log of your
vehicle's service history.
PREPARE A LIST
Make a written list of your vehicle's problems or the
specific work you want done. If you've had an
accident or work done that is not on your
maintenance log, let the service advisor know.
BE REASONABLE WITH REQUESTS
If you list a number of items and you must have
your vehicle by the end of the day, discuss the
situation with the service advisor and list the items
in order of priority. At many authorized dealers, you
may obtain a rental vehicle (additional charges
may apply). If you need a rental, it is advisable to
make these arrangements when you call for an
appointment.
IF YOU NEED ASSISTANCE
FCA US LLC and its authorized dealers are vitally
interested in your satisfaction. We want you to be
happy with our products and services.
Warranty service must be done by an authorized
dealer. We strongly recommend that you take the
vehicle to an authorized dealer. They know your
vehicle the best, and are most concerned that you
get prompt and high quality service. FCA US LLC's
authorized dealers have the facilities,
factory-trained technicians, special tools, and the
latest information to ensure the vehicle is fixed
correctly and in a timely manner.
This is why you should always talk to an authorized
dealer’s service manager first. If for some reason
you are still not satisfied, talk to the general
manager or owner of the authorized dealer. They
want to know if you need assistance. If an
authorized dealer is unable to resolve the concern,
you may contact FCA US LLC's Customer
Assistance center.
Any communication to FCA US LLC's customer
center should include the following information:
Owner's name and address
Owner's telephone number (home, mobile, and
office)
Authorized dealer name
Vehicle Identification Number (VIN)
Vehicle delivery date and mileage
ROADSIDE ASSISTANCE
Available 24 hours, 7 days a week.
Call 1-800-521-2779 or visit
chrysler.rsahelp.com(USA)
Call 1-800-363-4869 or visit fca.roadsideaid.com
(Canada)
Who is Covered
You are covered by Roadside Assistance services if
you are a purchaser for use of the vehicle.
Roadside Assistance services last for five years or
60,000 miles on the odometer, whichever occurs
first, calculated from the start date of the Basic
Limited Warranty, as set forth in “section 2.1 E”.
1
1. Towing services provided through Cross Country Motor
Club, Inc. Medford, MA 02155, except in AK,CA, HI, OR, WI,
and WY, where services are provided by Cross Country
Motor Club of California, Inc., Thousand Oaks, CA 91360.

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