2006 DODGE RAM 2500 DIESEL coolant temperature

Adding Coolant
When adding coolant, or refilling the system, a minimum
solution of 50% recommended HOAT ethylene glycol
engine coolant (antifreeze) and distilled water should be
used. Use higher concentrations (not to exceed 70%) if
temperatures below
34°F (
37°C) are anticipated.
Use only high purity water such as distilled or deionized
water when mixing the water/engine coolant solution.
The use of lower quality water will reduce the amount of
corrosion protection in the engine cooling system.
NOTE:It is the owner’s responsibility to maintain the
proper level of protection against freezing according to
the temperatures occurring in the area where the vehicle
is operated.
NOTE:Mixing coolant types will decrease the life of the
engine coolant and will require more frequent coolant
changes.When additional coolant is needed to maintain the
proper level, add the recommended concentration of
antifreeze and water to the overflow bottle. Do not
overfill.
NOTE:Failure to follow the antifreeze concentration
and replacement recommendations, or failure to use
antifreeze formulated to prevent corrosion of all cooling
system metals, may result in radiator plugging, overheat-
ing, or cooling system leaks such as in core hole plugs.
WARNING!
Never add coolant to the radiator when the engine is
overheated. Do not loosen or remove pressure cap to
cool an overheated engine. The coolant is under
pressure and severe scalding could result.
MAINTAINING YOUR VEHICLE 399
7

EMISSION CONTROL SYSTEM MAINTENANCE
The “Scheduled” maintenance services, listed inbold
typein this section (Section 8) must be done at the times
or mileages specified to assure the continued proper
functioning of the emission control system. These, and all
other maintenance services included in this manual,
should be done to provide best vehicle performance and
reliability. More frequent maintenance may be needed for
vehicles in severe operating conditions such as dusty
areas and very short trip driving.
Inspection and service also should be done any time a
malfunction is suspected.
NOTE:Maintenance, replacement, or repair of the emis-
sion control devices and systems on your vehicle may be
performed by any automotive repair establishment or
individual using any automotive part which has been
certified pursuant to U.S. EPA or, in the State of Califor-
nia, California Air Resources Board regulations.
MAINTENANCE SCHEDULES — 24–VALVE
CUMMINS TURBO DIESEL
There are two maintenance schedules that show the
requiredservice for your vehicle.
First is Schedule“B”. It is for vehicles that are operated
under one or more of the following conditions that are
listed below and at the beginning of the schedule.
•Frequent short trips where the engine does not achieve
full operating temperature (operating temperature de-
fined as 190° F (66° C ) coolant temperature).
•Extensive engine idling (over 10 minutes per hour of
operation) at ambient temperatures less than 32° F (0°
C).
•Driving in dusty conditions.
•Frequent trailer towing.
•Taxi, police, or delivery service (commercial service).
442 MAINTENANCE SCHEDULES
8
M
A
I
N
T
E
N
A
N
C
E
S
C
H
E
D
U
L
E
S

Schedule “B”
Follow schedule “B” if you usually operate your vehicle
under one or more of the following conditions.
•Frequent short trips where the engine does not achieve
full operating temperature (operating temperature de-
fined as 190° F (66° C ) coolant temperature).
•Extensive engine idling (over 10 minutes per hour of
operation) at ambient temperatures less than 32° F (0°
C).
•Driving in dusty conditions.
•Frequent trailer towing.
•Taxi, police, or delivery service (commercial service).
•Off-road or desert operation.
•Extensive operation at high engine speeds (greater
than 2900 rpm) and loads (greater than 70% throttle).
NOTE:IfANYof these apply to you then change your
coolant every 101,250 miles (162 000 km) or 60 months,
whichever comes first and follow schedule “B” of the
Maintenance Schedulessection of this manual.
SCHEDULE “B” 445
8
M
A
I
N
T
E
N
A
N
C
E
S
C
H
E
D
U
L
E
S

Child Restraint Tether Anchors.............60,64
Child Seat............................56,63
Cigar Lighter........................... 152
Climate Control......................... 231
Clock.....................185,188,196,209,223
Clutch Linkage Maintenance................ 405
Compact Disc (CD) Maintenance............. 230
Compact Spare Tire...................... 304
Compass.............................. 138
Compass Calibration..................... 138
Compass Variance....................... 139
Computer, Trip/Travel.................... 134
Console, Overhead....................... 133
Contract, Service........................ 472
Cooling System......................... 397
Coolant Capacity...................... 437
Coolant Level......................... 398
Disposal of Used Coolant................ 401
Drain, Flush, and Refill.................. 398Inspection........................... 397
Radiator Cap......................... 401
Selection of Coolant (Antifreeze).........400,438
Temperature Gauge..................... 179
Cruise Control (Speed Control).............. 130
Cup Holder............................ 153
Customer Assistance..................... 470
Data Recorder, Event...................... 54
Daytime Running Lights................... 123
Dealer Service.......................... 376
Defroster, Rear Window..............81,237,241
Defroster, Windshield..................233,235
Delay (Intermittent) Wipers................. 126
Differential, Limited-Slip.................. 285
Dipsticks.............................. 379
Power Steering........................ 392
Disc Brakes............................ 403
Disposal.............................. 384
480 INDEX

Engine Oil........................... 384
Used Coolant (Antifreeze)................ 401
Door Ajar............................. 185
Door Locks............................. 17
Door Opener, Garage..................... 141
Draining Fuel/Water Separator Filter.......... 387
Drive Belts............................ 385
Dual Rear Wheels.....................313,360
DVD Player (Video Entertainment System)...... 223
Electric Rear Window Defrost..........81,237,241
Electrical Power Outlets................... 150
Electronic Speed Control (Cruise Control)...... 130
Electronically Shifted Transfer Case........... 278
Emergency Brake........................ 286
Emergency, In Case of
Freeing Vehicle When Stuck............... 366
Hazard Warning Flasher................. 350
Jacking............................. 353Jump Starting......................... 363
Tow Hooks.......................... 367
Towing............................. 368
Emission Control System Maintenance......... 442
Engine............................... 374
Air Cleaner.......................... 385
Block Heater.......................253,260
Break-In Recommendations................ 69
Compartment......................... 374
Coolant (Antifreeze).................400,438
Cooling............................. 397
Data Plate........................... 348
Identification......................... 374
Idling.............................. 262
Jump Starting......................... 363
Oil ..............................379,438
Oil Synthetic......................... 261
Runaway............................ 314
Temperature Gauge..................... 179
INDEX 481
10

Ethylene Glycol Antifreeze................. 400
Event Data Recorder...................... 54
Exhaust Gas Caution................71,169,397
Exhaust System.................71,396,397,412
Exterior Lighting........................ 122
Fan .................................. 402
Filters
Engine Oil.....................379,382,438
Flashers
Turn Signal.......................... 124
Flat Tire Stowage.....................352,362
Fluid, Brake........................... 439
Fluid Capacities......................... 437
Fluid Level Checks
Brake............................... 403
Manual Transmission................... 406
Power Steering........................ 392
Transfer Case......................... 406Fluids, Lubricants and Genuine Parts.......... 438
Fog Lights.......................123,183,436
Fold Flat Load Floor..................... 162
Four Wheel Drive....................... 273
Four-Way Hazard Flasher.................. 350
Freeing A Stuck Vehicle................... 366
Front Axle (Differential)................394,405
Fuel..............................314,318
Diesel.........................314,318,438
Gauge.............................. 184
Requirements......................... 314
Specifications......................... 317
Tank Capacity........................ 437
Fuses................................ 420
Garage Door Opener (HomeLink) ........... 141
Gauges............................... 177
Coolant Temperature.................... 179
Fuel................................ 184
482 INDEX