2007 RAM CHASSIS CAB octane

ENGINE RUNAWAY
WARNING!In case of engine runaway due to flammable fumes
from gasoline spills or turbocharger oil leaks being
sucked into the engine do the following to help
avoid personal injury and/or vehicle damage:
1. Shut off engine ignition switch.
2. Using a CO 2
or dry chemical type fire extin-
guisher, direct the spray from the fire extinguisher
into the grille on the passenger side so that the spray
enters the engine air intake.
The inlet for the engine air intake is located behind the
passenger side headlamp and receives air through the
grille FUEL REQUIREMENTS
Fuel Requirements (Gas Engines)
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 routine use of premium
gasoline is not recommended. The use of premium
gasoline will provide no 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 327
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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. Gasolines
blended with MMT provide no performance advantage
beyond gasolines of the same octane number without
MMT. Gasolines blended with MMT reduce spark plug
life and reduce emission system performance. We recom-
mend that gasolines free of MMT be used in your vehicle.
The MMT content of gasoline may not be indicated on
the gasoline pump; therefore, you should ask your gaso-
line 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 allowed in the United States. MMT is pro-
hibited in Federal and California reformulated gasolines.
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: STARTING AND OPERATING 329
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• 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.
• When 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.
• The use of fuel additives which are now being sold as
octane enhancers is not recommended. Many 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 the330 STARTING AND OPERATING

Component Fluids, Lubricants and Genuine Parts
Engine Fuel Filter ( 6.7L Diesel
Engine ) Mopar  Fuel Filter, P/N 05183410AA or equivalent. Must meet 7 micron rat-
ing. Using a fuel filter that does not meet the manufacturers filtration and
water separating requirements can severely impact fuel system life and re-
liability.
Crankcase Ventilation Filter ( 6.7L
Diesel Engine ) Mopar  CCV Filter, P/N 68001433AA or equivalent.
Fuel Selection ( 5.7L Gas Engine ) 89 Octane, (R=M)/2 Method, Mid-Grade Preferred (87 Octane acceptable).
Fuel Selection ( 6.7L Diesel En-
gine ) Use good quality diesel fuel from a reputable supplier in your vehicle. Fed-
eral law requires that you must fuel this vehicle with Ultra Low Sulfur High-
way Diesel fuel (15 ppm Sulfur maximum) and prohibits the use of Low Sul-
fur Highway Diesel fuel (500 ppm Sulfur maximum) to avoid damage to the
emissions control system. For most year-round service, No. 2 diesel fuel
meeting ASTM specification D-975 Grade S15 will provide good perfor-
mance. If the vehicle is exposed to extreme cold (below 20°F or -7°C), or is
required to operate at colder-than-normal conditions for prolonged periods,
use climatized No. 2 diesel fuel or dilute the No. 2 diesel fuel with 50% No.
1 diesel fuel. This will provide better protection from fuel gelling or wax-
plugging of the fuel filters. This vehicle is fully compatible with biodiesel
blends up to 5% biodiesel meeting ASTM specification D-975.470 MAINTAINING YOUR VEHICLE

Filters
Air Cleaner .......................... 406
Engine Fuel ..................... 410,413,469
Engine Oil ..................... 398,403,469
Flashers
Turn Signal .......................... 125
Flat Tire Stowage ........................ 381
Flooded Engine Starting ................... 249
Fluid, Brake ........................... 471
Fluid Capacities ......................... 468
Fluid Level Checks
Brake ............................... 435
Manual Transmission ................. 437,438
Power Steering ........................ 421
Transfer Case ......................... 437
Fluids, Lubricants and Genuine Parts .......... 469
Fog Lights ....................... 125,178,465
Fold Flat Load Floor ..................... 161
Four Wheel Drive ....................... 283 Four-Way Hazard Flasher .................. 370
Freeing A Stuck Vehicle ................... 385
FrontAxle(Differential) ................ 423,436
Front Wheel Bearings ..................... 444
Fuel ............................ 327,331,335
Adding .......................... 333,335
Diesel ......................... 331,335,469
Filter ......................... 410,413,469
Gauge .............................. 179
Hoses .............................. 433
Light ............................... 180
Octane Rating ........................ 327
Requirements ...................... 327,331
Specifications ......................... 332
System Hoses ......................... 433
Tank Capacity ........................ 468
Fuses ................................ 457
Gas Cap (Fuel Filler Cap) ............... 334,394 INDEX 519
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Lug Nuts ............................. 376
Lumbar Support ........................ 116
Maintenance ........................... 396
Maintenance Free Battery .................. 418
Maintenance Procedures ................... 398
Maintenance Schedule ................. 474,484
Schedule “A” ......................... 498
Schedule “B” ......................... 487
Manual, Service ......................... 508
Manual Transmission .................. 279,438
Fluid Level Check ................... 437,438
Lubricant Selection ..................... 471
Shift Speeds .......................... 280
Map/Reading Lights ..................... 141
Mirrors ................................ 83
Automatic Dimming ..................... 84
Electric Powered ....................... 85
Outside .............................. 84 Rearview ............................. 83
TrailerTowing ...................... 86,354
Modifications/Alterations, Vehicle ............. 8
Mopar Parts ......................... 395,507
Multi-Function Control Lever ............... 125
Navigation Radio ........................ 218
Navigation System ....................... 218
New Vehicle Break-In Period ................ 72
Noise Control
Maintenance .......................... 445
Tampering Prohibited ................... 446
Noise Emission Warranty ............... 445,447
Occupant Restraints ....................... 34
Octane Rating, Gasoline (Fuel) .............. 327
Odometer .......................... 175,179
Trip ............................. 175,179
Off-Pavement Driving (Off-Road) ............ 298 INDEX 523
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