2015 JEEP GRAND CHEROKEE octane

•This device must accept any interference received,
including interference that may cause undesired op-
eration.
The TPM sensors are regulated under one of the follow-
ing licenses:
United StatesMRXMERCTX1
Canada2546A-MERCTX1
FUEL REQUIREMENTS
3.6L Engine — If Equipped
This engine is designed to meet all emis-
sions regulations and provide excellent
fuel economy and performance when us-
ing high-quality unleaded “regular” gaso-
line having an octane rating of 87. The use
of premium gasoline is not recommended, as it will not
provide any benefit over regular gasoline in these
engines.
5.7L Engine — If Equipped
This engine is designed to meet all emis-
sions regulations and provide satisfactory
fuel economy and performance when us-
ing high-quality unleaded gasoline having
an octane range of 87 to 89. The manufac-
turer recommends the use of 89 octane for optimum
performance. The use of premium gasoline is not recom-
mended, as it will not provide any benefit over regular
gasoline in these engines.
Light spark knock at low engine speeds is not harmful to
your engine. However, continued heavy spark knock at
high speeds can cause damage and immediate service is
required. Poor quality gasoline can cause problems such
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Problems that result from using gasoline containing
Methanol or gasoline containing more than 10% Ethanol
are not the responsibility of the manufacturer and may
not be covered under New Vehicle Limited Warranty.
E-85 Usage In Non-Flex Fuel Vehicles
Non-Flex Fuel Vehicles (FFV) are compatible with gaso-
line containing 10% ethanol (E10). 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 corrosion.
To fix a Non-FFV vehicle inadvertently fueled once with
E-85 perform the following:
•Drain the fuel tank (see your authorized dealer).
•Change the engine oil and oil filter.
•Disconnect and reconnect the battery to reset the
engine controller memory.
More extensive repairs will be required for prolonged
exposure to E-85 fuel.
MMT In Gasoline
Methylcyclopentadienyl Manganese Tricarbonyl (MMT)
is a manganese-containing metallic additive that is
blended into some gasoline 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
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CAUTION!(Continued)
•The use of fuel additives, which are now being
sold as octane enhancers, is not recommended.
Most of these products contain high concentrations
of methanol. Fuel system damage or vehicle perfor-
mance problems resulting from the use of such
fuels or additives is not the responsibility of the
manufacturer.
NOTE:Intentional tampering with the emissions control
system can result in civil penalties being assessed against
you.
Carbon Monoxide Warnings
WARNING!
Carbon monoxide (CO) in exhaust gases is deadly.
Follow the precautions below to prevent carbon
monoxide poisoning:
•Do not inhale exhaust gases. They contain carbon
monoxide, a colorless and odorless gas, which can
kill. Never run the engine in a closed area, such as
a garage, and never sit in a parked vehicle with the
engine running for an extended period. If the
vehicle is stopped in an open area with the engine
running for more than a short period, adjust the
ventilation system to force fresh, outside air into
the vehicle.
(Continued)
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STARTING AND OPERATING 531

Ethanol Fuel (E-85)
E-85 is a mixture of approximately 85% fuel ethanol and
15% unleaded gasoline.
WARNING!
Ethanol vapors are extremely flammable and could
cause serious personal injury. Never have any smok-
ing materials lit in or near the vehicle when remov-
ing the fuel filler tube cap (gas cap) or filling the
tank. Do not use E-85 as a cleaning agent and never
use it near an open flame.
Fuel Requirements
If your vehicle is E-85 compatible, it will operate on
unleaded gasoline with an octane rating of 87, or E-85
fuel, or any mixture of these two fuels.
For best results, a refueling pattern that avoids alternat-
ing between E-85 and unleaded gasoline is recom-
mended.
E-85 Badge
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STARTING AND OPERATING 533

FLUIDS, LUBRICANTS AND GENUINE PARTS
Engine
ComponentFluid, Lubricant, or Genuine Part
Engine CoolantWe recommend you use MOPAR® Antifreeze/Coolant 10 Year/150,000 Mile
Formula OAT (Organic Additive Technology).
Engine Oil – 3.6L Engine We recommend you use API Certified SAE 5W-20 Engine Oil, meeting the
requirements of Chrysler Material Standard MS-6395 such as MOPAR®, Penn-
zoil®, and Shell Helix®. Refer to your engine oil filler cap for correct SAE grade.
Engine Oil – 5.7L Engine We recommend you use API Certified SAE 5W-20 Engine Oil, meeting the
requirements of Chrysler Material Standard MS-6395 such as MOPAR®, Penn-
zoil®, and Shell Helix®. Refer to your engine oil filler cap for correct SAE grade.
Engine Oil FilterWe recommend you use MOPAR® Engine Oil Filter or equivalent.
Spark Plugs – 3.6L Engine We recommend you use MOPAR® Spark Plugs.
Spark Plugs – 5.7L Engine We recommend you use MOPAR® Spark Plugs.
Fuel Selection – 3.6L Engine 87 Octane
Fuel Selection – 5.7L Engine 87 Octane Acceptable - 89 Octane Recommended
670 MAINTAINING YOUR VEHICLE

Fluid Capacities..........................669
Fluid Leaks.............................113
Fluid Level Checks
Automatic Transmission..................643
Brake................................639
Engine Oil............................607
Power Steering.........................468
Fluids, Lubricants and Genuine Parts...........670
Fog Lights..............................293
Fog Light Service.........................664
Folding Rear Seat.........................157
Forward Collision Warning..................219
Four-Way Hazard Flasher...................568
Four Wheel Drive.........................440
Operation.............................440
Systems..............................440
Four Wheel Drive Operation.................440
Freeing A Stuck Vehicle.....................587
Front Axle (Differential).....................640
Fuel...................................527
Adding..............................536
Additives.............................530
Clean Air.............................528
Economy Mode........................429
Ethanol..............................528
Gasoline..............................527
Gauge...............................297
Materials Added........................530
Methanol.............................528
Octane Rating..........................527
Requirements..........................527
Tank Capacity..........................669
Fuel, Flexible............................532
Fueling................................536
Fuses..................................650
Garage DoorOpener(HomeLink®)............248
Gasoline, Clean Air........................528
700 INDEX

Octane Rating, Gasoline (Fuel)................527
Odometer...............................298
Tr i p . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ..298
Off-Pavement Driving (Off-Road)..............457
Off-Road Driving (Off-Pavement)..............457
Oil, Engine..............................305
Capacity.............................669
Change Interval........................607
Dipstick..............................607
Disposal..............................610
Filter................................610
Filter Disposal.........................610
Identification Logo......................608
Materials Added to......................610
Recommendation.......................608
Synthetic.............................609
Viscosity.............................608
Oil Filter, Selection........................610
Onboard Diagnostic System..................603
Opener, Garage Door (HomeLink®)............248
Operating Precautions......................603
Operator Manual (Owner’s Manual).............6
Outside Rearview Mirrors...................130
Overhead Console.........................245
Overheating, Engine.......................295
Owner’s Manual (Operator Manual).............6
Paint Care..............................644
Panic Alarm..............................24
Parking Brake............................469
ParkSense® System, Rear....................223
Passing Light............................177
Passive Entry.............................35
Pets...................................107
Placard, Tire and Loading Information..........501
Power
Brakes...............................472
Distribution Center (Fuses)................65110
INDEX 705