2023 JEEP GRAND CHEROKEE octane

TECHNICAL SPECIFICATIONS397
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 half way).
NOTE:If in doubt about the correct tightness, have them
checked with a torque wrench by an authorized
dealer or service station.
After 25 miles (40 km), check the lug nut/bolt
torque to be sure that all the lug nuts/bolts are
properly tightened.

Torque Pattern

FUEL REQUIREMENTS
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 a 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.
2.0L ENGINE
This engine is designed to meet all
emissions requirements, and provide
satisfactory 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 91 or higher octane premium gasoline will
allow these engines to operate to optimal
performance. This increase in performance is most
noticeable in hot weather or under heavy load
conditions, such as while towing.
3.6L ENGINE
Do not use E-85 flex fuel or ethanol blends greater
than 15% in this engine.
This engine is designed to meet all
emissions regulations and provide
optimum fuel economy and performance
when using high quality unleaded regular
gasoline having a posted octane number of 87 as
specified by the (R+M)/2 method. The use of
higher octane premium gasoline is not required, as
it will not provide any benefit over regular gasoline
in these engines.
5.7L ENGINE
Do not use E-85 flex fuel or ethanol blends greater
than 15% in this engine.
This engine is designed to meet all
emission regulations and provide
satisfactory fuel economy and
performance when using high-quality
unleaded gasoline having an octane range of 87 to
89 as specified by the (R+M)/2 method. The use of
89 octane plus gasoline is recommended for
optimum performance and fuel economy.
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.
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398TECHNICAL SPECIFICATIONS
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.
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 or
not be covered under 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 or
not be covered under the New Vehicle Limited
Warranty.
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).

23_WL_OM_EN_USC_t.book Page 398

TECHNICAL SPECIFICATIONS399
(Continued)
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 and California
reformulated gasoline.
FUEL SYSTEM CAUTIONS
NOTE:Intentional tampering with the emissions control
system can result in civil penalties being assessed
against you.
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 or 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.
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!
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TECHNICAL SPECIFICATIONS401
ENGINE FLUIDS AND LUBRICANTS
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) meeting the
requirements of the manufacturer Material Standard MS.90032.
Intercooler 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 — 2.0L Engine We recommend using Mopar® API SP/GF-6A Certified SAE 5W-30 Full
Synthetic Engine Oil which meets the requirements of the manufacturer
Material Standard MS-13340. Equivalent full synthetic SAE 5W-30 API SP
engine oil can be used but must have the API Donut trademark Ú
page 339.
CAUTION!
Failure to use the recommended API SP/GF-6A or equivalent oil can cause
engine damage not covered by the vehicle warranty.
Engine Oil – 3.6L & 5.7L 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 339.
Fuel Selection — 2.0L Engine 87 Octane (R+M)/2 Method, 0-15% Ethanol.
Fuel Selection – 3.6L Engine 87 Octane (R+M)/2 Method, 0-15% Ethanol (Do not use E-85).
Fuel Selection – 5.7L Engine 89 Octane Recommended - 87 Octane Acceptable (R+M)/2 Method, 0-15%
Ethanol (Do not use E-85).
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413
Octane Rating
........................................... 397Requirements................................. 397, 400Specifications............................................ 401Tank Capacity............................................ 400Fuel Saver Technology................................... 139Fuel System Cautions.................................... 399Fueling........................................................... 183Fuses............................................................. 352
G
Garage Door Opener (HomeLink).................... 53Gasoline, (Fuel)............................................. 397Gasoline, Clean Air........................................ 398Gasoline, Reformulated................................. 398Gear Ranges.................................................. 128Glass Cleaning............................................... 395Gross Axle Weight Rating............................... 186Gross Combination Weight Rating................. 186Gross Trailer Weight...................................... 185Gross Vehicle Weight Rating.......................... 185GVWR............................................................ 184
H
Hands-Free Liftgate......................................... 89Hazard Warning Flashers.............................. 307Head Restraints............................................... 47Head Up Display (hud) — If Equipped
b
.......105
Headlights....................................................... 57Automatic.................................................... 59Cleaning................................................... 393Delay........................................................... 60High Beam/Low Beam Select Switch.......... 59Leveling....................................................... 61Lights On Reminder..................................... 61On With Wipers............................................ 60Passing........................................................ 59Switch.......................................................... 57Heads Up Display (HUD)............................... 105Heated Mirrors................................................. 53Heated Seats................................................... 45Heated Steering Wheel.................................... 33Hill Descent Control............................. 116, 253Hill Descent Control Indicator....................... 253Hill Start Assist.............................................. 254Hitches Trailer Towing........................................... 188Hold ’N Go.................................................... 125HomeLink (Garage Door Opener)..................... 53HoodClosing...................................................... 110Opening.................................................... 110Hood Release.................................................. 87HUD.............................................................. 105
I
Ignition.............................................................22Key Fob Battery Low Or Dead......................22Key Fob Not Detected..................................22Keyless Ignition...........................................22Keyless Push Button....................................22Push Button Ignition....................................22Switch..........................................................22Ignition Park Interlock................................... 127Immobilizer (Sentry Key)..................................22Inside Rearview Mirror........................... 49, 307Instrument Cluster...........................................98Descriptions.............................................. 116Display.........................................................98Home........................................................ 103Menu Items.............................................. 103Instrument Cluster DisplayVehicle Info............................................... 103Instrument Panel Lens Cleaning................... 395Interior And Instrument Lights.........................62Interior Appearance Care.............................. 394Interior Lights...................................................62Interior Monitoring Camera........................... 177Intermittent Wipers (Delay Wipers)..................64Intersection Collision Assist.......................... 264InverterPower...........................................................80iPod/USB/MP3 Control....................................7711

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415
Loading Vehicle
............................................. 184Tires.......................................................... 379Locks Child Protection........................................... 31Manual........................................................ 27Power Door.................................................. 28Lubrication, Body........................................... 343Lug Nuts/Bolts.............................................. 396Luggage Carrier............................................... 93
M
Main Menu.................................................... 103Maintenance............................................ 84, 86Maintenance Free Battery............................. 338Maintenance Schedule.................................. 330Malfunction Indicator Light
(Check Engine).................................... 112, 118ManualService...................................................... 407MassageSeats........................................................... 44McIntosh........................................................ 233Memory Feature (Memory Seats).................... 34Memory Seat................................................... 34Memory Seats And Radio................................ 34Methanol....................................................... 398Methylcyclopentadienyl Manganese
Tricarbonyl (MMT) In Gasoline....................... 399
Mirrors............................................................. 49Automatic Dimming Rearview..................... 50Digital Rearview........................................... 50Exterior Folding............................................ 51Heated......................................................... 53Outside........................................................ 51Power.......................................................... 52Power Folding.............................................. 52Rearview.............................................49, 307Tilt Side Mirrors........................................... 53Vanity.......................................................... 50Modifications/AlterationsVehicle......................................................... 12Monitor, Tire Pressure System...................... 264Mopar Parts.................................................. 406Multi-Function Control Lever............................ 58
N
Navigation..................................................... 104Neutral.......................................................... 115New Vehicle Break-In Period......................... 122Night Vision Camera..................................... 177
O
Occupant Restraints..................................... 269Octane Rating, Gasoline (Fuel)..................... 397
Off Road Pages............................................. 245Accessory Gauges..................................... 246Pitch And Roll........................................... 246Selec Terrain............................................. 246Status Bar................................................. 245Suspension............................................... 247Vehicle Dynamics..................................... 246Off-Road Driving (Off-Pavement)................... 104Oil Change Indicator...................................... 100Reset........................................................ 100Oil Filter, Change........................................... 339Oil Filter, Selection........................................ 339Oil Pressure Light.......................................... 110Oil, Engine..................................................... 338Capacity.................................................... 400Checking................................................... 337Dipstick..................................................... 337Disposal.................................................... 339Filter......................................................... 339Filter Disposal........................................... 339Identification Logo.................................... 339Materials Added To................................... 339Pressure Warning Light............................. 110Recommendation............................ 338, 400Synthetic................................................... 339Viscosity.................................................... 400
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