Cooling System Care; Coolant Recommendations - Chevrolet 1971 Camaro Owner's Manual

Cooling System Care
Checking the coolant level at
each engine oil change. Level
should be 3" below bottom of filler
neck when cold.
Coolant Recommendations
The inhibited year-around cool-
ant, used to fill the cooling system
at the factory, is a high quality so-
lution 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 operat-
ing 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 colorless.
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 Speci-
fication 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 suffi-
ciently to remove radiator cap.
60
NOTE: Addition of supplemental
additives and other available ma-
terials which have not been specifi-
cally approved by GM are not nor-
mally required in your car. Use of
these materials will result in un-
warranted operating expense.
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
OaF to provide adequate corrosion
protection. When coolant addi-
tions are required because of cool-
ant loss or to provide additional
protection against freezing at tem-
peratures lower than -20°F,
(-32°F in Canada), a sufficient
amount of an ethylene glycol base