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at the factory is a
high,
quality
solution that meets General Motors
Specifications 1899-M. This fac-
tory-fill coolant solution is formu-
lated to withstand two full calendar
years of normal operation without
draining, provided the same con-
centration of coolant is added if the
system needs additional fluid be-
tween drain periods. The original
factory-fill coolant provides freez-
ing protection to -20°F (-32°F
in Canada).
Every two years the cooling sys-
tem should be serviced as follows:
1. Drain coolant, when hot,
through the radiator drain
valve.
2. Close valve and add sufficient
plain water to fill system.
3. Run engine until normal oper-
ating temperature is reached.
4. Drain and refill the system as
described in steps 1, 2, and
3 a sufficient number of times
until the drained liquid is color-
less.
5. Allow system to drain com-
pletely and then close radiator
drain valve tightly.
6. Add the necessary amount of
high quality inhibited glycol
base coolant meeting GM Spec-
ification 1899-M to provide the
required freezing and corrosion
protection (at least to O°F.).
7. Run engine until normal oper-
ating temperature is reached.
8. Check and adjust level of cool-
ant after system has cooled suf-
ficiently to remove radiator cap.
NOTE: Addition of supplemental
additives and other available ma-
terials which have not been specif-
ically approved by GM are not
normally required in your car. Use
of these materials will result in un-
warranted operating expense.
65
It is the owner's responsibility to
keep the freeze protection at a level
commensurate with the tempera-
tures which may occur in the area
in which the vehicle will be oper-
ated. Regardless of whether freez-
ing temperatures are or are not ex-
pected, cooling system protection
should be maintained at least to
O°F. to provide adequate corrosion
protection. When coolant additions
are required because of coolant loss
or to provide additional protection
against freezing at temperatures
lower than
-20°F.,
(-32°F.
in
Canada), a sufficient amount of an
ethylene glycol base coolant meet-
ing GM Specification 1899-M
should be used.
NOTE: Alcohol or methanol base
coolants or plain water are not rec-
ommended for your Monte Carlo
at any time.
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