2008 CHRYSLER 300 octane

FUEL REQUIREMENTS
2.7L Engine
The 2.7L engine is designed to meet all
emissions regulations and provide excel-
lent fuel economy and performance when
using high quality unleaded “regular”
gasoline having an octane rating of 87. The
use of premium gasoline is not recom-
mended. Under normal conditions, the use of premium
gasoline will not provide a benefit over high quality
regular gasolines, and in some circumstances may result
in poorer performance.
3.5L and 5.7L Engines
The 3.5L & 5.7L engine is designed to meet
all emissions regulations and provide sat-
isfactory fuel economy and performance
when using high quality unleaded gaso-
line having an octane range of 87 to 89. Themanufacturer 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,
STARTING AND OPERATING 365
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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
his/her gasoline contains MMT. It is even more impor-
tant 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 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 they 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.
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•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:
•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.
368 STARTING AND OPERATING

Component Fluids, Lubricants, and Genuine Parts
Oil Filter (3.5 Liter) Mopar05281090 or equivalent.
Oil Filter (5.7 Liter) Mopar05281090 or equivalent.
Fuel Selection (2.7 Liter) 87 Octane
Fuel Selection (3.5 Liter) 87 to 89 Octane
Fuel Selection (5.7 Liter) 87 to 89 Octane
Chassis
Component Fluids, Lubricants, and Genuine Parts
Automatic Transmission MoparATF+4 Automatic Transmission Fluid.
Brake Master Cylinder MoparDOT 3, SAE J1703 or equivalent should be used. If DOT 3 brake
fluid is not available, then DOT 4 is acceptable. Use only recommended
brake fluids.
Front Axle API GL-5 SAE 75W90 Synthetic Gear Lubricant or equivalent.
Power Steering Reservoir MoparPower Steering Fluid + 4, MoparATF+4 Automatic Transmission
Fluid.
Rear Axle API GL-5 SAE 75W140 Synthetic Gear Lubricant or equivalent.
Transfer Case MoparTransfer Case Lubricant LX, P/N 05170055AA, or equivalent.
476 MAINTAINING YOUR VEHICLE

Cooling System....................... 436
Engine Oil........................421,422
Power Steering........................ 432
Transfer Case......................... 445
Fluids................................ 475
Fluids, Lubricants and Genuine Parts.......... 475
Fog Lights..........................134,202
Folding Rear Seat........................ 123
Freeing A Stuck Vehicle................... 407
Front Suspension Ball Joints................ 432
Front Wheel Bearings..................... 446
Fuel................................. 365
Adding............................. 369
Additives............................ 367
Clean Air............................ 366
Conserving.......................... 219
Ethanol............................. 366
Filler Cap (Gas Cap).................... 369
Filter............................... 426Gasoline............................ 365
Gauge.............................. 209
Hoses.............................. 441
Materials Added....................... 367
Methanol............................ 366
Octane Rating......................365,475
Requirements......................... 365
Saver Mode.......................... 219
Specifications......................... 475
Tank Capacity........................ 473
Fuel System Caution..................... 370
Fueling............................... 369
Fuses................................ 451
Garage Door Opener (HomeLink) ........... 177
Gas Cap (Fuel Filler Cap)...............369,417
Gasoline, Clean Air...................... 366
Gasoline (Fuel)......................... 365
Conserving.......................... 219
INDEX 503
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Navigation Radio........................ 252
Navigation System....................... 252
New Vehicle Break-In Period................ 76
Occupant Restraints....................... 42
Octane Rating, Gasoline (Fuel)............365,475
Odometer..........................202,208
Trip .............................202,208
Oil Change Indicator..................203,218
Oil Change Indicator, Reset..............203,218
Oil, Engine.........................421,475
Capacity............................ 473
Change Interval..................203,218,423
Checking.........................421,422
Dipstick..........................421,422
Disposal............................ 425
Filter............................425,475
Filter Disposal........................ 425
Identification Logo..................... 423Materials Added to..................... 424
Recommendation...................423,473
Synthetic............................ 424
Viscosity.......................423,424,473
Oil Filter, Change........................ 425
Oil Filter, Selection....................... 425
Onboard Diagnostic System..............417,418
Opener, Garage Door (HomeLink) ........... 177
Operating Precautions.................... 417
Outside Rearview Mirrors.................. 87
Overdrive............................. 309
Overhead Console....................... 176
Overheating, Engine...................207,393
Owner’s Manual (Operator Manual).......... 490
Paint Care............................. 446
Panic Alarm............................ 25
Park Sense System, Rear................... 172
Parking Brake.......................... 322
INDEX 509
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