2008 CHRYSLER ASPEN octane

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. Poor quality gasoline can cause problems such
as hard starting, stalling, and hesitations. If you experi-
ence these symptoms, try another brand of gasoline
before considering service for the vehicle.Over 40 auto manufacturers worldwide have issued and
endorsed consistent gasoline specifications (the World-
wide Fuel Charter, WWFC) which 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.
Reformulated Gasoline
Many areas of the country require the use of cleaner
burning gasoline referred to as ªReformulated Gasoline.º
Reformulated gasolines contain oxygenates, and are spe-
cifically blended to reduce vehicle emissions and im-
prove air quality.
We strongly support the use of reformulated gasolines.
Properly blended reformulated gasolines will provide
excellent performance and durability for the engine and
fuel system components.
332 STARTING AND OPERATING

Gasoline/Oxygenate Blends
Some fuel suppliers blend unleaded gasoline with oxy-
genates such as 10% ethanol, MTBE and ETBE. Oxygen-
ates are required in some areas of the country during the
winter months to reduce carbon monoxide emissions.
Fuels blended with these oxygenates may be used in
your vehicle.
CAUTION!
DO NOT use gasoline containing Methanol or E85
Ethanol. Use of these blends may result in starting
and driveability problems and may damage critical
fuel system components.NOTE: 4.7L Engine Ð If Equipped, is now rated for
E85 Ethanol use. Only vehicles with the E-85 fuel filler
door label can operate on E-85. For more information,
refer to ªFlexible Fuelº in this section.
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
STARTING AND OPERATING 333
5

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 reformulated gasoline.
Materials Added To Fuel
All gasolines sold in the United States are required to
contain effective detergent additives. Use of additional
detergents or other additives is not needed under normal
conditions and would result in unnecessary cost. There-
fore, you should not have to add anything to the fuel.
Fuel System Cautions
CAUTION!
Follow these guidelines to maintain your vehicle's performance:
²The use of leaded gas is prohibited by Federal law. Using
leaded gasoline can impair engine performance, damage the
emission control system.
²An out-of-tune engine, or certain fuel or ignition malfunc-
tions, 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.
²When pulling a heavy load or driving a fully loaded vehicle
when the humidity is low and the temperature is high, use a
premium unleaded fuel to help prevent spark knock. If spark
knock persists, lighten the load, or engine piston damage may
result.
²The use of fuel additives which are now being sold as octane
enhancers is not recommended. Many of these products con-
tain 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.
334 STARTING AND OPERATING

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:
²do not switch when the fuel gauge indicates less than
1/4 full
²do not add less than five gallons (19 Liters) when
refueling
²operate the vehicle immediately after refueling for a
period of at least five 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 90ÉF
(32ÉC), you may experience hard starting and rough idle
following startup, even if the above recommendations
are followed.
Selection Of Engine Oil For Flexible Fuel Vehicles
(E-85) and Gasoline Vehicles
FFV vehicles operated on E-85 require specially formu-
lated engine oils. These special requirements are included
in Mopartengine oils, and in equivalent oils meeting
DaimlerChrysler Specification MS-6395. The manufac-
turer only recommends engine oils that are API Certified
and meet the requirements of Material Standard MS-
6395. MS-6395 contains additional requirements, devel-
oped during extensive fleet testing, to provide additional
protection to DaimlerChrysler Corporation engines. Use
Mopartor an equivalent oil meeting the specification
MS-6395.
340 STARTING AND OPERATING

FLUIDS AND CAPACITIES
U.S. Metric
Fuel
4.7L, 87 Octane 27 gal 102 L
5.7L, 89 Octane 27 gal 102 L
Engine Oil (with filter)
4.7L, SAE 5W-20, API Certified 6 qts 5.7 L
5.7L, SAE 5W-20, API Certified 7 qts 6.6 L
Cooling System (includes 2.1 qts/2 L for coolant bottle
4.7L (MopartAntifreeze/Coolant 5 Year/100,000 Mile
Formula)14.2 qts 13.5 L
5.7L (MopartAntifreeze/Coolant 5 Year/100,000 Mile
Formula)16.6 qts 15.8 L
NOTE:All fluid capacities are approximate.
436 MAINTAINING YOUR VEHICLE

FLUIDS, LUBRICANTS AND GENUINE PARTS
Engine
Component Fluids, Lubricants and Genuine Parts
Engine Coolant MopartAntifreeze/Coolant 5 Year/100,000 Mile Formula HOAT (Hybrid Or-
ganic Additive Technology).
4.7L/5.7L Engine Oil Use API Certified SAE 5W-20 Engine Oil, meeting the requirements of
DaimlerChrysler Material Standard MS-6395. Refer to your engine oil filler
cap for correct SAE grade.
Engine Oil Filter MopartEngine Oil Filter, P/N 5281090 or equivalent.
Spark Plugs (4.7L Engine) Upper Bank Ð FR8TE2 (Gap 0.039 in [.99 mm]) Lower Bank Ð FR8T1332
(Gap 0.051 in [1.30 mm])
Spark Plugs (5.7L Engine) REC14MCC4 (Gap 0.043 in [1.09 mm])
Fuel Selection (4.7L Engine) 87 Octane
Fuel Selection (5.7L Engine) 87 Octane Acceptable - 89 Octane Recommended
MAINTAINING YOUR VEHICLE 437
7

Power Steering........................ 398
Transfer Case......................... 413
Fluids, Lubricants and Genuine Parts.......... 437
Fog Lights..........................148,435
Folding Rear Seat.....................129,133
Four Wheel Drive....................... 280
Operation........................... 280
Four-Way Hazard Flasher.................. 366
Freeing A Stuck Vehicle................... 378
Front Axle (Differential)................... 414
Fuel................................. 331
Filler Cap (Gas Cap).................336,337
Filter............................... 395
Gauge.............................. 203
Octane Rating......................331,437
Requirements......................331,436
Tank Capacity........................ 436Fuel, Flexible.............See Flexible Fuel Vehicles
Fuel System Caution..................... 338
Fuses.....................188,419,420,423,426
Garage Door Opener (HomeLinkt) ........... 176
Gas Cap (Fuel Filler Cap)............336,337,386
Gas Gauge (Fuel Gauge)................... 203
Gasoline (Fuel)......................... 331
Gasoline, Reformulated................... 332
Gauges
Coolant Temperature.................... 203
Fuel................................ 203
Odometer.........................206,208
Speedometer......................... 205
Tachometer.......................... 206
Gear Ranges........................... 275
General Information.................17,115,331
464 INDEX

Octane Rating, Gasoline (Fuel).............. 331
Oil Change Indicator..................169,207
Oil Change Indicator, Reset................. 207
Oil, Engine.........................390,437
Capacity............................ 436
Change Interval....................... 391
Dipstick............................. 390
Disposal............................ 392
Filter............................393,437
Filter Disposal........................ 392
Identification Logo..................... 391
Materials Added to..................... 392
Recommendation...................391,436
Synthetic............................ 392
Viscosity..........................392,436
Onboard Diagnostic System..............386,387
Opener, Garage Door (HomeLinkt) ........... 176
Outside Rearview Mirrors.................. 85
Overdrive..........................206,277Overdrive OFF Switch.................... 277
Overhead Console....................165,166
Overheating, Engine...................... 204
Owner's Manual (Operator Manual).......... 453
Panic Alarm............................ 24
Park Sense System, Rear................... 160
Parking Brake.......................... 289
Parking On Hill......................... 289
Passing Light........................... 150
Pedals, Adjustable....................... 155
Personal Settings........................ 170
Pets.................................. 74
Pets, Transporting........................ 74
Phone, Cellular....................88,220,221
Phone, Hands-Free (UConnectŸ)........88,220,221
Placard, Tire and Loading Information......... 308
Port
Universal Serial Bus (USB).............217,220
INDEX 469
10