Jeep 2008 Grand Cherokee - Manual (Page 278)

After Starting
The idle speed is controlled automatically and it will
decrease as the engine warms up.
Normal Starting — Diesel Engines
Observe the following when the engine is operating.
• All message center lights are off.
• Malfunction Indicator Light (MIL) is off.
• Low Oil Pressure Light is off.
Cold Weather Precautions
Operation in ambient temperature below 32°F (0°C) may
require special considerations. The following chart sug-
gest these options:
*No. 1 Ultra Low Sulfur Diesel Fuel (ULSD) should only
be used where extended arctic conditions (-10°F/-23°C)
exist.
278 STARTING AND OPERATING