octane JEEP COMMANDER 2010 1.G Owners Manual

FUEL REQUIREMENTS
3.7 Engine
All engines (except 5.7L engines) are de-
signed to meet all emissions regulations
and provide excellent fuel economy and
performance when using high-quality un-
leaded “regular” gasoline having an oc-
tane 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
The 5.7L engine is designed to meet all
emissions regulations and provide satisfac-
tory fuel economy and performance when
using high-quality unleaded gasoline hav-
ing an octane range of 87 to 89. The manu-
facturer recommends the use of 89 octane for optimum performance. The use of premium gasoline
is not recommended, 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 as hard
starting, stalling and hesitations. If you experience these
symptoms, try another brand of gasoline before consid-
ering service for the vehicle.
Over 40 auto manufacturers worldwide have issued and
endorsed consistent gasoline specifications (the World-
wide Fuel Charter, WWFC) to define fuel properties
necessary to deliver enhanced emissions, performance,
and durability for your vehicle. The manufacturer recom-
mends the use of gasoline that meets the WWFC speci-
fications, if they are available.
314 STARTING AND OPERATING

•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
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 emission 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 if the
gasoline contains MMT.
It is even more important to look for gasoline without
MMT in Canada, because MMT can be used at levels
higher than those allowed in the United States.
MMT is prohibited in Federal and California reformu-
lated gasoline.
Materials Added To Fuel
All gasoline sold in the United States is required to
contain effective detergent additives. Use of additional
detergents or other additives is not needed under normal
316 STARTING AND OPERATING

conditions and would result in additional cost. Therefore,
you should not have to add anything to the fuel.
Fuel System Cautions
CAUTION!
Follow these guidelines to maintain your vehicle’s
performance:
•The use of leaded gas is prohibited by Federal law.
Using leaded gasoline can impair engine performance
and damage the emission 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 your authorized dealer for service assistance.
•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 performance problems
resulting from the use of such fuels or additives is not
the responsibility of the manufacturer.
NOTE: Intentional tampering with emissions control
systems 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.
5
STARTING AND OPERATING 317

FLUIDS, LUBRICANTS, AND GENUINE PARTS
Engine
ComponentFluid, Lubricant, or Genuine Part
Engine Coolant MOPARAntifreeze/Coolant 5 Year/100,000 Mile Formula HOAT (Hy-
brid Organic Additive Technology) or equivalent.
Engine Oil Use API Certified SAE 5W-20 Engine Oil, meeting the requirements of
Chrysler Material Standard MS-6395. Refer to your engine oil filler cap for
correct SAE grade.
Engine Oil Filter MOPAREngine Oil Filter or equivalent.
Spark Plugs (3.7L Engine) ZFR6F-11G (Gap 0.043 in [1.09 mm])
Spark Plugs (5.7L Engine) LZFR5C–11 (Gap 0.043 in [1.09 mm])
Fuel Selection (3.7L Engine) 87 Octane
Fuel Selection (5.7L Engine) 87 Octane Acceptable - 89 Octane Recommended
408 MAINTAINING YOUR VEHICLE

Gasoline............................ 314
Gauge .............................. 169
Materials Added ....................... 316
Octane Rating ........................ 314
Requirements ......................... 407
Saver Mode .......................... 176
Tank Capacity ........................ 407
Fuel Optimizer ......................... 176
Fuel Saver ............................. 176
Fuel System Caution ................ 317,319,320
Fuses ................................ 392
Garage Door Opener (HomeLink) ........... 130
Gas Cap (Fuel Filler Cap) ............318,320,359
Gasoline (Fuel) ......................... 314
Conserving .......................... 176
Gasoline, Reformulated ................... 315
Gasoline/Oxygenate Blends ................ 315
Gauges Coolant Temperature ................... 166 Fuel
............................... 169
Speedometer ......................... 160
Tachometer .......................... 163
Gear Ranges ........................... 248
General Information .................. 19,25,313
Glass Cleaning .......................... 391
Gross Axle Weight Rating ...............321,324
Gross Vehicle Weight Rating .............321,323
GVWR ............................... 321
Hands-Free Phone (uconnect) ............... 85
Hazard Warning Flasher ................... 342
Head Restraints .......................... 89
Head Rests ............................. 89
Headlights ............................ 105
Bulb Replacement ...................... 401
Cleaning ............................ 391
On With Wipers ....................... 106
Replacing ........................... 401
Heated Mirrors .......................... 84
448 INDEX

Luggage Rack (Roof Rack)................. 150
Lumbar Support ......................... 87
Maintenance Free Battery .................. 367
Maintenance Procedures ................... 362
Maintenance Schedule .................... 412
Malfunction Indicator Light (Check Engine) . . 162,360
Manual, Service ......................... 437
Memory Feature (Memory Seat) .............. 98
Memory Seat ........................... 98
Memory Seats and Radio ................... 98
Mini-Trip Computer ...................... 176
Mirrors ................................ 82
Automatic Dimming ..................... 82
Electric Powered ....................... 84
Electric Remote ........................ 84
Exterior Folding ........................ 83
Heated .............................. 84
Outside .............................. 83
Rearview ............................. 82 Vanity
............................... 85
Mode Fuel Saver ........................... 176
Modifications/Alterations, Vehicle ............. 9
Monitor, Tire Pressure System ............... 303
Mopar Parts ......................... 362,436
Multi-Displacement Engine System ........... 271
Multi-Function Control Lever ............... 104
New Vehicle Break-In Period ................ 73
Occupant Restraints ................... 38,55,58
Occupant Restraints (Sedan) .............51,55,57
Octane Rating, Gasoline (Fuel) .............. 314
Odometer .......................... 167,168
Trip ................................ 167
Off-Pavement Driving (Off-Road) ..........261,386
Off-Road Driving (Off-Pavement) ..........261,386
Oil Change Indicator ..................... 175
Oil Change Indicator, Reset ................. 175
452 INDEX