Chrysler Voyager 2001 Operating Information Manual page 137

Cooling System — Drain, Flush and Refill
At the intervals shown in the maintenance sched-
ules, the system should be drained, flushed and
refilled.
If the solution is dirty or contains a considerable
amount of sediment, clean and flush with a reli-
able cooling system cleaner. Follow with a thor-
ough rinsing to remove all deposits and chemi-
cals. Properly dispose of old antifreeze solution.
Selection Of Coolant — All Engines
This vehicle has been factory filled with an Ethyl-
ene Glycol based engine coolant with long life
corrosion inhibitors (called HOAT, for Hybrid Or-
ganic Additive Technology). When it becomes
necessary to replace the coolant, use a coolant
like Mopar Antifreeze/Coolant, 5 year/100,000
mile formula. This coolant offers the best engine
cooling without corrosion when mixed with 50%
distilled water to obtain a freeze point of –37°C
(–34°F).
136
CAUTION!
Mixing of coolants other than specified (non-
HOAT), may result in engine damage that may
not be covered under the new vehicle warranty,
and decreased corrosion protection. If a non-
HOAT coolant is introduced into the cooling
system in an emergency, it should be replaced
with the specified coolant as soon as possible.
Do not use plain water alone or alcohol base
antifreeze products. Do not use additional rust
inhibitors or antirust products, as they may not
be compatible with the radiator coolant and may
plug the radiator.
This vehicle has not been designed for use with
Propylene Glycol based coolants. Use of Propy-
lene Glycol based coolants is not recom-
mended.
Adding Coolant — All Engines
When adding coolant, or refilling the system, a
minimum solution of 50% ethylene glycol coolant
and distilled water should be used. Higher con-
centrations (not to exceed 70%) are required if
temperatures below -37°F are anticipated.
Use only high purity water such as distilled or
deionized water when mixing the water/antifreeze
solution. The use of lower quality water will reduce
the amount of corrosion protection in the engine
cooling system.
Please note that it is the owner's responsibility to
maintain the proper level of protection against
freezing according to the temperatures occurring
in the area where the vehicle is operated.
Coolant Pressure Cap — All Engines
The coolant pressure cap must be fully tightened
to prevent loss of coolant, and to insure that
coolant will return to the radiator from the coolant
recovery bottle. The coolant pressure cap should
be inspected and cleaned if there is any accumu-
lation of foreign material on the sealing surfaces.
WARNING!
The warning words "DO NOT OPEN HOT" on
the coolant pressure cap are a safety precau-
tion. Never add coolant to the radiator when the
engine is overheated. Do not loosen or remove
the coolant pressure cap to cool an overheated
engine. Heat causes pressure to build up in the
cooling system. To prevent scalding or injury, do
not remove the coolant pressure cap while the
system is hot or under pressure.