Chevrolet 1973 Monte Carlo Owner's Manual page 62

• Maintain cooling system freeze
protection at .;...20
0
F or below
to ensure protection against
corrosion and loss of coolant
from boiling, even though freez-
ing temperatures are not ex-
pected.
• Add ethylene glycol base cool-
ant that meets GM Specification
1899-M when coolant additions
are required because of coolant
loss or to provide additional
protection against freezing at
temperatures lower than _20 0 F
(_32
0
F in Canada).
NOTE: Alcohol or methanol base
coolants or plain water are not
recommended for your Monte
Carlo at any time.
Radiator Pressure Cap
The radiator cap, a 15 lb. pres-
sure type, must be installed tightly,
otherwise coolant may be lost and
damage to engine may result from
overheating. Radiator pressure caps
should be checked periodically for
proper operation. If replacement is
required specify AC.
Thermostat
The cooling system is protected
and controlled by a thermostat in-
stalled in the engine coolant outlet
to maintain a satisfactory operating
temperature of the engine. This
thermostat is designed for continu-
ous use through both winter and
summer and need not be changed
seasonally. When replacement is
necessary, Delco parts are recom-
mended.
60
Tires
The factory installed tires on
your car as shown on the following
Tire Usage chart are designed to
provide the best all around per-
formance for normal vehicle op-
eration. When inflated as recom-
mended on the tire pressure plac-
ard, located on the left door of
your vehicle, they have the load
carrying capacity to operate satis-
factorily at all normal highway
speeds.
Tire Care
Tires should be checked regu-
larly for proper inflation pressure,
wear, and damage. The following
information will assist you in prop-
erly caring for your tires: