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STARTING AND OPERATING
Engine Warm-Up
Avoid full throttle operation when the engine is
cold. When starting a cold engine, bring the engine
up to operating speed slowly to allow the oil
pressure to stabilize as the engine warms up.
If temperatures are below 32°F (0°C), operate the
engine at moderate speeds for five minutes before
full loads are applied.
E
NGINE
I
DLING
Avoid prolonged idling, long periods of idling may
be harmful to your engine because combustion
chamber temperatures can drop so low that the
fuel may not burn completely. Incomplete
combustion allows carbon and varnish to form on
piston rings, cylinder head valves, and injector
nozzles. Also, the unburned fuel can enter the
crankcase, diluting the oil and causing rapid wear
to the engine.
S
TOPPING
T
HE
E
NGINE
After full load operation, idle the engine for a few
minutes before shutting it down. This idle period
will allow the lubricating oil and coolant to carry
excess heat away from the turbocharger. Refer to
the following chart for proper engine shutdown.
NOTE:
Under certain conditions the engine fan will run
after the engine is turned off. These conditions are
under high load and high temperature conditions.
Do Not Operate The Engine With Low Oil
Pressure
If the low oil pressure warning light turns on while
driving, stop the vehicle and shut down the engine
as soon as possible. A chime will sound when the
light turns on.
NOTE:
Do not operate the vehicle until the cause is
corrected. This light does not show how much oil is
in the engine. The engine oil level must be checked
under the hood.
Driving Condition
Load
Turbocharger Temperature
Idle Time (min.) Before Engine
Shutdown
Stop and Go
Empty
Cool
None
Stop and Go
Medium
0.5
Highway Speeds
Medium
Warm
1.0
City Traffic
Maximum GCWR
1.5
Highway Speeds
Maximum GCWR
2.0
Uphill Grade
Maximum GCWR
Hot
2.5
CAUTION!
If oil pressure falls to less than normal readings,
shut the engine off immediately. Failure to do so
could result in immediate and severe engine
damage.
