Buick PARKAVENUE 1994 Manual page 251

Add coolant mix at the recovery
tank,
but be careful not
to spill it.
Radiator Pressure Cap
Your radiator pressure cap is a 15 psi (1 05 kPa)
pressure-type cap and must be tightly installed
to prevent coolant
loss
and possible engine
damage from overheating. Be sure the arrows on
the cap line up with the overflow tube on the
radiator filler neck.
Wlien you replace your radiator pressure cap, ap AC@
cap is recommended.
Thermostat
Engine coolant temperature is controlled by a thermostat
in the engine coolant system. The thermostat stops the
flow of coolant through the radiator until the coolant
reaches a preset temperature.
When you replace your thermostat, an AC@ thermostat
is recommended.
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