octane JEEP COMMANDER 2007 1.G Owners Manual

The tire pressure sensors are covered under one of the
following licenses:
United States.....................KR5S120123
Canada........................2671-S120123
FUEL REQUIREMENTS
3.7/4.7L Engines (If Equipped)
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. Under normal conditions,
the use of premium gasoline will not provide a benefit
over high quality regular gasolines, and in some circum-
stances may result in poorer performance.
5.7L Engines (If Equipped)
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. Under normal conditions, the use of
premium gasoline will not provide a benefit over high
quality regular and mid-grade gasolines, and in some
circumstances may result in poorer performance.
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.
STARTING AND OPERATING 307
5

Problems that result from using methanol/gasoline or
E85 Ethanol blends are not the responsibility of the
manufacturer. While MTBE is an oxygenate made from
Methanol, it does not have the negative effects of Metha-
nol.
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 whether
or not his/her gasoline contains MMT.It is even more important to look for gasolines 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
conditions and would result in additional cost. Therefore
you should not have to add anything to the fuel.
STARTING AND OPERATING 309
5

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,
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 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:
310 STARTING AND OPERATING

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
Your vehicle will operate on both unleaded gasoline with
an octane rating of 87, or E-85 fuel, or any mixture of
these two.For best results, a refueling pattern that alternates be-
tween E-85 and unleaded gasoline should be avoided.
When you do switch fuels, it is recommended that
•you do not switch when the fuel gauge indicates less
than 1/4 full
•you do not add less than 5 gallons when refueling
•you operate the vehicle immediately after refueling for
a period of at least 5 minutes
Observing these precautions will avoid possible hard
starting and/or significant deterioration in drivability
during warm up.
NOTE:When the ambient temperature is above 90°F
(32°C), you may experience hard starting and rough idle
following start up even if the above recommendations are
followed.
312 STARTING AND OPERATING

FLUIDS, LUBRICANTS, AND GENUINE PARTS
Engine
Component Fluid, Lubricant, or Genuine Part
Engine Coolant MoparAntifreeze/Coolant 5 Year/100,000 Mile Formula HOAT (Hybrid
Organic Additive Technology)
Engine Oil (3.7L/4.7L/5.7L Engines) Use API Certified SAE 5W-20 Engine Oil, meeting the requirements of
DaimlerChrysler Material Standard MS-6395.
Oil Filter (All Engines) MoparOil Filter (P/N 05281090)
Spark Plugs Refer to the Vehicle Emission Control Information label in the engine com-
partment.
Fuel Selection (3.7L and 4.7L Engines) 87 Octane
Fuel Selection (5.7L Engines) 87 Octane Acceptable - 89 Octane Recommended
MAINTAINING YOUR VEHICLE 403
7

Finish Care............................ 389
Flashers.............................. 340
Hazard Warning....................... 340
Turn Signal.......................... 176
Flexible Fuel Vehicles
Cruising Range........................ 313
Engine Oil........................... 313
Fuel Requirements................... 311,312
Maintenance.......................... 314
Replacement Parts..................... 313
Starting............................. 313
Flipper Glass, Liftgate..................... 33
Flooded Engine Starting................... 252
Fluid Capacities......................... 402
Fluid Leaks............................. 70
Fluid Level Checks
Automatic Transmission................. 385
Engine Oil........................... 362
Power Steering........................ 372Fluids, Lubricants and Genuine Parts.......... 403
Fog Lights..........................123,183
Fold and Tumble Rear Seat................. 108
Folding Rear Seat.....................108,111
Four Wheel Drive....................... 264
Operation........................... 264
Systems............................. 264
Four Wheel Drive Operation................ 264
Four-Way Hazard Flasher.................. 340
Freeing A Stuck Vehicle................... 263
Front Axle (Differential)................... 384
Fuel................................. 307
Filler Cap (Gas Cap).................... 314
Gasoline............................ 307
Gauge.............................. 182
Hoses.............................. 381
Materials Added....................... 309
Octane Rating........................ 307
Requirements......................... 402
INDEX 443
10

Mini-Trip Computer...................... 193
Mirrors................................ 76
Automatic Dimming..................... 77
Electric Powered....................... 78
Electric Remote........................ 78
Exterior Folding........................ 78
Heated.............................. 79
Outside.............................. 77
Rearview............................. 76
Vanity............................... 79
Modifications/Alterations, Vehicle............. 9
Monitor, Tire Pressure System............... 297
Mopar Parts.........................361,433
Multi-Displacement Engine System........... 279
Multi-Function Control Lever............... 119
Navigation Radio........................ 220
Navigation System....................... 220
New Vehicle Break-In Period................ 67Occupant Restraints....................... 37
Octane Rating, Gasoline (Fuel).............. 307
Odometer..........................181,182
Trip ................................ 181
Off-Pavement Driving (Off-Road)..........270,387
Off-Road Driving (Off-Pavement)..........270,387
Oil, Engine............................ 362
Capacity............................ 402
Change Interval....................... 363
Dipstick............................. 362
Disposal............................ 365
Filter............................... 365
Filter Disposal........................ 365
Identification Logo..................... 364
Materials Added to..................... 365
Pressure Warning Light.................. 178
Recommendation...................363,402
Synthetic............................ 364
Viscosity..........................364,402
448 INDEX