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The radiator normally remains completely full, so there is
no need to remove the radiator cap unless checking for
the engine coolant (antifreeze) freeze point or replacing
the engine coolant (antifreeze). Advise your service at-
tendant of this. As long as the engine operating tempera-
ture is satisfactory, the coolant recovery 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 recovery bottle. Do not overfill.
Points to Remember
NOTE: When the vehicle is stopped after a few miles
(kilometers) of operation, you may observe vapor coming
from the front of the engine compartment. This is nor-
mally a result of moisture from rain, snow, or high
humidity accumulating on the radiator and being vapor-
ized when the thermostat opens, allowing hot coolant 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 recovery bottle.
•
Check the coolant freeze point in the radiator and in
the coolant recovery bottle. If antifreeze needs to be
added, the contents of the coolant recovery bottle must
also be protected against freezing.
•
If frequent engine coolant (antifreeze) additions are
required, or if the level in the coolant recovery bottle
does not drop when the engine cools, the cooling
system should be pressure tested for leaks.
•
Maintain engine coolant (antifreeze) concentration at
50% HOAT engine coolant (antifreeze) (minimum)
and distilled/deionized water for proper corrosion
protection of your engine, which contains aluminum
components.
7
MAINTAINING YOUR VEHICLE 373