Jeep GLADIATOR 2022, Owner'S Manual

Page: 129 / 380

*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.
•
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 page 356.
•
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.
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
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.
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
Fuel Operating Range Chart
STARTING AND OPERATING 127
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