Engine Idling; Stopping The Engine - Jeep GLADIATOR 2022 Owner's Manual

Fuel Operating Range Chart
*Number 1 ULSD Fuel should only be used where
extended arctic conditions 0°F (-18°C) exist.
NOTE:
•
Use of Climatized ULSD Fuel or Number 1 ULSD fuel
results in a noticeable decrease in fuel economy.
Driving Condition
Stop and Go
Stop and Go
Highway Speeds
City Traffic
Highway Speeds
Uphill Grade
•
Climatized ULSD fuel is a blend of Number 2 ULSD
fuel and Number 1 ULSD fuel which reduces the
temperature at which wax crystals form in fuel.
•
The fuel grade should be clearly marked on the
pump at the fuel station.
The engine requires the use of Ultra Low Sulfur Die-
•
sel Fuel. Use of incorrect fuel could result in engine
and exhaust system damage
•
If climatized or Number 1 ULSD fuel is not available,
and you are operating below 20°F (-6°C), in sus-
tained arctic conditions, Mopar® Premium Diesel
Fuel Treatment (or equivalent) is recommended to
avoid gelling (see Fuel Operating Range Chart).
Engine Oil Usage
See Engine Fluids and Lubricants for the correct engine
oil viscosity page 361.
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 stabi-
lize as the engine warms up.
Load Turbocharger Temperature
Empty
Medium
Medium
Maximum GCWR
Maximum GCWR
Maximum GCWR
If temperatures are below 32°F (0°C), operate the
engine at moderate speeds for five minutes before full
loads are applied.

ENGINE IDLING

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
page 356.
burn completely. Incomplete combustion allows carbon
and varnish to form on piston rings, cylinder head
valves, turbocharger, and injector nozzles. Also, the
unburned fuel can enter the crankcase, diluting the oil
and causing rapid wear to the engine.

STOPPING THE ENGINE

After full load operation, idle the engine for a few min-
utes before shutting it down. This idle period will allow
the lubricating oil and coolant to carry excess heat away
from the turbocharger.
NOTE:
Refer to the following chart for proper engine shutdown.
Idle Time (min.) Before Engine Shutdown
Cool
Warm
Hot
STARTING AND OPERATING 127
None
0.5
1.0
1.5
2.0
2.5
4