Jeep 2010 Wrangler Owner's Manual page 255

JOBNAME: CHRY OM INTL (Conten PAGE: 255 SESS: 2 OUTPUT: Wed Aug 25 08:13:16 2010 SUM: 4B1B2559
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that engine coolant (antifreeze) will return to the
radiator from the coolant reserve tank.
The cap should be inspected and cleaned if
there is any accumulation of foreign material on
the sealing surfaces.
WARNING!
The warning words DO NOT OPEN HOT on
the cooling system pressure cap are a safety
precaution. Never add engine coolant (anti-
freeze) when the engine is overheated. Do not
loosen or remove the cap to cool an over-
heated engine. Heat causes pressure to build
up in the cooling system. To prevent scalding
or injury, do not remove the pressure cap
while the system is hot or under pressure.
Disposal of Used Engine Coolant
Used ethylene glycol based engine coolant
(antifreeze) is a regulated substance requiring
proper disposal. Check with your local authori-
ties to determine the disposal rules for your
community. To prevent ingestion by animals or
children, do not store ethylene glycol based
engine coolant (antifreeze) in open containers
or allow it to remain in puddles on the ground.
If ingested by a child or pet, seek emergency
assistance immediately. Clean up any ground
spills immediately.
Engine Coolant Level
The coolant bottle provides a quick visual
method for determining that the coolant level is
adequate. With the engine idling, and warm to
normal operating temperature, the level of the
engine coolant (antifreeze) in the bottle should
be between the ranges indicated on the bottle.
The radiator normally remains completely full,
so there is no need to remove the radiator cap
unless checking for engine coolant (antifreeze)
freeze point or replacing engine coolant (anti-
freeze). Advise your service attendant of this.
As long as the engine operating temperature is
satisfactory, the coolant bottle need only be
checked once a month.
When additional engine coolant (antifreeze) is
needed to maintain the proper level, it should
be added to the coolant bottle. Do not overfill.
Points To Remember
NOTE:
When the vehicle is stopped after a few
miles/kilometers of operation, you may ob-
serve vapor coming from the front of the
engine compartment. This is normally a re-
sult of moisture from rain, or high humidity
accumulating on the radiator and being va-
porized when the thermostat opens, allow-
ing hot engine coolant (antifreeze) to enter
the radiator.
If an examination of your engine compartment
shows no evidence of radiator or hose leaks,
the vehicle may be safely driven. The vapor will
soon dissipate.
• Do not overfill the coolant bottle.
• Check the engine coolant (antifreeze) freeze
point in the radiator and in the coolant recov-
ery bottle. If engine coolant (antifreeze)
needs to be added, the contents of the
coolant recovery bottle must also be pro-
tected against freezing.
• If frequent engine coolant (antifreeze) addi-
tions are required, or if the level in the
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