Thermostat; To Add Coolant To The Recovery Tank - Chevrolet 1995 Corvette Owner's Manual

To Add Coolant to the Recovery Tank
If you need more coolant, add the proper mix at the
coolant recovery tank, but only when your engine is
cool. If the tank is very low or empty, also add coolant
to the coolant high fill reservoir, see "Engine
Overheating" in the Index for information.
Add coolant mix at the recovery tank, but be careful not
to spill it.
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