Jeep 2009 Grand Cherokee SRT - Owner Manual - Manual (Page 364)

Cooling System — Drain, Flush and Refill
If the engine coolant (antifreeze) is dirty or contains a
considerable amount of sediment, clean and flush with a
reliable cooling system cleaner. Follow with a thorough
rinsing to remove all deposits and chemicals. Properly
dispose of the old engine coolant (antifreeze).
Refer to the “Maintenance Schedule” in Section 8 for
proper maintenance intervals.
Selection Of Coolant
Use only the manufacturer’s recommended coolant. Re-
fer to “Fluids, Lubricants, and Genuine Parts” in this
section for the correct fluid type.
CAUTION!
Mixing of engine coolant (antifreeze) other than
specified HOAT engine coolant (antifreeze), may
result in engine damage and may decrease corrosion
protection. If a non-HOAT engine coolant (anti-
freeze) is introduced into the cooling system in an
emergency, it should be replaced with the specified
engine coolant (antifreeze) as soon as possible.
Do not use water alone or alcohol based engine
coolant (antifreeze) products. Do not use additional
rust inhibitors or antirust products, as they may not
be compatible with the engine coolant (antifreeze)
and may plug the radiator.
This vehicle has not been designed for use with
Propylene Glycol based engine coolant (antifreeze).
Use of Propylene Glycol based engine coolant (anti-
freeze) is not recommended.
362 MAINTAINING YOUR VEHICLE