RAM 1500 2022, Owner'S Manual

Page: 148 / 496

146 STARTING AND OPERATING
NORMAL OPERATION — DIESEL ENGINE
Observe the following when the diesel engine is
operating.

All message center lights are off.

Malfunction Indicator Light (MIL) is off.

Engine Oil Pressure telltale is not illuminated.

Voltmeter operation:
The voltmeter may show a gauge fluctuation at
various engine temperatures. This is caused by the
glow plug heating system. The number of cycles
and the length of the cycling operation is controlled
by the engine control module. Glow plug heater
operation can run for several minutes, once the
heater operation is complete the voltmeter needle
will stabilize.
C
OLD
W
EATHER
P
RECAUTIONS
Operation in ambient temperature below 32°F
(0°C) may require special considerations. The
following charts suggest these options:
Fuel Operating Range
NOTE:
Use Ultra Low Sulfur Diesel (ULSD) Fuels ONLY.
Fuel Operating Range Chart
*Number 1 ULSD Fuel should only be used where
extended arctic conditions below (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 and Number 1 ULSD Fuels 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 ULSD Fuel. Use
of incorrect fuel could result in engine and
exhaust system damage
Ú
page 469.

If Climatized or diesel Number 1 ULSD Fuel is
not available, and you are operating below
(20°F/-6°C), in sustained arctic conditions,
Mopar® Premium Diesel Fuel Treatment (or
equivalent) is recommended to avoid gelling
(see Fuel Operating Range Chart).
Engine Oil Usage
For the correct engine oil viscosity
Ú
page 473.
22_DT_OM_EN_USC_t.book Page 146