low oil pressure DODGE RAM 3500 DIESEL 2006 3.G User Guide

•If an engine has been operating and the coolant is hot,
allow the engine to cool before you slowly loosen the
filler cap and relieve the pressure from the cooling
system.
•To avoid burns, remember that the engine components
will stay hot after the engine is shut off.
•Do not use gasoline or other flammable materials to
clean parts. Always use approved cleaning solvents.
•Relieve all pressure in the fuel, oil and cooling systems
before any lines, fittings or related items are removed
or disconnected. Be alert for possible pressure when
disconnecting any device from a system that utilizes
pressure. Do not check for pressure leaks with your
hand. High pressure oil or fuel can cause personal
injury.
WARNING!
Do not open the high pressure fuel system with the
engine running. Engine operation causes high fuel
pressure. High pressure fuel spray can cause serious
injury or death.
•Important:All maintenance other than that listed in
this manual, as well as some procedures listed here,
MUSTbe performed by your local Dodge Truck
Dealer. Your authorized Dodge Dealer has been
trained and has the necessary parts to maintain your
engine.
378 MAINTAINING YOUR VEHICLE

Checking the vehicle while it’s on level ground will also
improve the accuracy of the oil level readings. Add oil
only when the level on the dipstick is below the “ADD”
mark. The total capacity from the low mark to the high
mark is 2 quarts (1.9 liters).
Never operate the engine with oil level below the “ADD”
mark or above the upper “SAFE” mark.Change Engine Oil
CAUTION!
Overfilling or underfilling the crankcase will cause
oil aeration or loss of oil pressure. This could dam-
age your engine.
Road conditions as well as your kind of driving affect the
interval at which your oil should be changed. Check the
following to determine if any apply to you:
•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).
380 MAINTAINING YOUR VEHICLE

Extremely cold ambient temperature may require the
addition of a “winter front” for effective operation of the
cab heating/cooling system. Make certain that a percent-
age of the radiator is exposed for adequate air flow
through the charge air cooler and automatic transmission
oil cooler. The percentage of opening must be increased
with the increasing ambient air temperature and/or
engine load. If the cooling fan can be heard cycling
frequently, increase the size of the opening in the winter
front.
Coolant bottle level check
The coolant reserve system provides a quick visual
method of determining that the coolant level is adequate.
With the engine idling, and warmed to the normal
operating temperature, the level of the coolant on the
coolant bottle should be between the fluid level marks.
Check the coolant level whenever the hood is raised.The radiator normally remains completely full, so there is
no longer a need to remove the coolant pressure cap
except for checking coolant freeze point or replacement
with new antifreeze coolant.
WARNING!
Never add coolant to the radiator when the engine is
overheated. Do not loosen or remove pressure cap to
cool overheated engine! The coolant is under pres-
sure and severe scalding could result.
Drain, Flush And Refill
At intervals shown on the Maintenance Schedules, the
system should be drained, flushed and refilled. Refer to
your dealer or consult a service manual for proper
procedures.
398 MAINTAINING YOUR VEHICLE

Oil Pressure.......................... 178
Speedometer......................... 178
Tachometer.......................... 177
Voltmeter............................ 177
Gear Ranges........................... 266
Glass Cleaning.......................... 419
Grocery Bag Retainer..................... 162
Gross Axle Weight Rating.................. 324
Gross Vehicle Weight Rating................ 323
GVWR............................... 320
Hands-Free Phone (UConnect™).............. 83
Hazard Warning Flasher................... 350
Head Restraints......................... 108
Headlights............................ 424
High Beam........................... 125
High Beam/Low Beam Select Switch........ 125
Lights On Reminder.................... 123
Passing............................. 125Switch.............................. 122
Heated Mirrors....................81,237,241
Heated Seats........................... 117
Heater............................... 234
High Beam/Low Beam Select (Dimmer) Switch . . 125
Hitches
Trailer Towing........................ 325
Hoisting.............................. 362
HomeLink(Garage Door Opener) Transmitter . . . 141
Hood Release.......................... 118
Hoses.............................402,405
Hub Caps............................. 358
Hydraulic Clutch Fluid.................... 405
Ignition.............................15,251
Key ...............................12,15
Lock................................ 15
Infant Restraint........................55,56
Inflation Pressure Tires.................... 309
INDEX 483
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