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SERVICING AND MAINTENANCE 481
Cooling System Pressure Cap
The cap must be fully tightened to prevent loss of engine
coolant
(antifreeze), and to ensure that engine coolant (anti-
freeze) will return to the radiator from the coolant expansion
b
ottle/r
ecovery tank if so equipped.
The cap should be inspected and cleaned if there is any accu-
mulation of foreign material on the sealing surfaces.
Disposal Of Used Coolant
Used ethylene glycol-based coolant (antifreeze) is a regu-
lated substance requiring proper disposal. Check with your
l
ocal a
uthorities to determine the disposal rules for your
community. To prevent ingestion by animals or children, do
not store ethylene glycol-based coolant 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.
Coolant Level
The coolant bottle provides a quick visual method for deter-
mining that the coolant level is adequate. With the engine OFF
and col
d, 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/coolant pressure cap unless
checking for engine coolant (antifreeze) freeze point or
replacing coolant. 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.
WARNING!
• Do not open hot engine cooling system. Never add
engine
coolant (antifreeze) when the engine is over-
heated. Do not loosen or remove the cap to cool an over-
heated engine. Heat causes pressure to build up in the
c
ooling sys
tem. To prevent scalding or injury, do not
remove the pressure cap while the system is hot or
under pressure.
• Do not use a pressure cap other than the one specified
for your
vehicle. Personal injury or engine damage may
result.
7
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