2007 Ram 2500 (Diesel) fuel type

2. Economy—
Improper inflation pressures can cause uneven wear pat-
terns to develop across the tire tread. These abnormal wear
patterns will reduce tread life resulting in a need for earlier
tire replacement. Under inflation, also increases tire rolling
resistance and results in higher fuel consumption.
3. Ride Comfort and Vehicle Stability—
Proper tire inflation contributes to a comfortable ride.
Over inflation produces a jarring and uncomfortable ride.
Tire Inflation Pressures
The proper cold tire inflation pressure is listed either on
the face of the driver’s door or on the driver’s side “B”
pillar.
Some vehicles may have Supplemental Tire Pressure
Information for vehicle loads that are less than the
maximum loaded vehicle condition. These pressure con-
ditions will be found in the “Supplemental Tire Pressure
Information” section of this manual.The pressure should be checked and adjusted as well as
inspecting for signs of tire wear or visible damage at least
once a month. Use a good quality pocket-type gauge to
check tire pressure. Do not make a visual judgement
when determining proper inflation. Radial tires may look
properly inflated even when they are under inflated.
Tire Placard Location
STARTING AND OPERATING 335
5

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
2or 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 (5.9L Diesel Engine)
Use good quality diesel fuel from a reputable supplier.
For most year-round service, No. 2 diesel fuel meeting
ASTM specification D-975 will provide good perfor-
mance. If the vehicle is exposed to extreme cold (below 20
degrees F or -7 degrees 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.
348 STARTING AND OPERATING

•Keep the front of the radiator clean. If your vehicle is
equipped with air conditioning, keep the front of the
condenser clean, also.
•Do not change the thermostat for summer or winter
operation. If replacement is ever necessary, install
ONLY the correct type thermostat. Other designs may
result in unsatisfactory coolant performance, poor gas
mileage, and increased emissions.
Fan
Inspection
Check the fan for cracks and bent or broken blades. If any
of these conditions exist, you must replace the fan. Make
sure it is securely mounted.
NOTE:This service procedure must be performed by a
trained service technician. Make arrangements with your
authorized Dodge Truck Dealer for this inspection.
Charge Air Cooler (Inter-Cooler)
The charge air cooler is positioned between the radiator
and the air conditioner condenser. Air enters the engine
through the air cleaner and passes through the turbo-
charger where it is pressurized. This pressurized air
rapidly reaches high temperature. The air is then directed
through a hose to the charge air cooler and through
another hose to the intake manifold of the engine. The air
entering the engine has been cooled by about 50 to 100
degrees Fahrenheit. This cooling process enables more
efficient burning of fuel resulting in fewer emissions.
To guarantee optimum performance of the system, keep
the surfaces of the charge air cooler, condenser and
radiator clean and free of debris. Periodically check the
hoses leading to and from the charge air cooler for cracks
or loose clamps resulting in loss of pressure and reduced
engine performance.
450 MAINTAINING YOUR VEHICLE

Adding Fuel........................... 352
Adjustable Pedals....................... 138
Air Cleaner, Engine
(Engine Air Cleaner Filter)............422,424,460
Air Conditioner Maintenance............... 438
Air Conditioning Refrigerant.............438,439
Air Conditioning System................259,438
Air Conditioning System, Zone Control........ 262
AirFilter ...........................422,424
Air Pressure, Tires....................335,343
Airbag.............................. 46,52
Airbag Light......................... 77,199
Airbag On/Off Switch..................... 52
Airbag, Side............................ 55
Alarm, Out of Park Sense...............296,302
Alarm, Panic............................ 23
Alarm (Security Alarm)................. 18,201
Alarm System (Security Alarm)............... 18
Alignment and Balance................... 342Alterations/Modifications, Vehicle............. 8
Antenna, Satellite Radio................... 252
Antifreeze (Engine Coolant)..............446,447
Capacities........................... 487
Anti-Lock Warning Light...............204,324
Anti-Theft Security Alarm (Theft Alarm)........ 18
Anti-Theft System..................... 18,201
Appearance Care........................ 463
Ashtray............................... 171
AutomaticDimmingMirror ................. 85
Automatic Door Locks.................... 153
Automatic Transaxle...................... 12
Interlock System........................ 15
Automatic Transmission................... 455
Adding Fluid......................... 456
Fluid and Filter Changes................. 457
Fluid Level Check...................... 455
FluidType ........................457,491
Shift Indicator........................ 201
534 INDEX