Cadillac 1993 Eldorado Owners Literature page 298

from me surge ram; use a flashlight as necessary to see into the tank. The
coolant level should be at or above the seam inside the tank.
If you need more coolant, add the proper mix.
RADIXTOR OR SURGE TANK PRESSURE
CAP
1
NOTICE:
Your radiator or surge tank cap is a 15 psi (105 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
When you replace your radiator or surge tank pressure cap, an 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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