Chevrolet 1993 Astro Passenger Owner's Manual page 264

Service & Appearance Care
Adding Coolant
PO408
TO Check Coolant: When your engine is cold, the coolant level should be at
COLD LEVEL, or a little higher.
When your engine is warm, the level should be up to COLD LEVEL, or a
little higher.
CAUTION
To Add Coolant: If you need more coolant, add the proper mix at the
coolant recovery tank.
Turning the radiator pressure cap when the engine and radiator are
hot can allow steam and scalding liquids to blow out and burn you
badly. With the coolant recovery tank, you will almost never have
to
add coolant at the radiator. Never turn the radiator pressure
cap-even a little-when the engine and radiator are hot.
I
Add coolant mix at the recovery tank, but be careful not
to
spill it.
CAUTION
i
You can be burned if you spill coolant on hot engine parts. Coolant
-
contains ethylene glycol, and
it
will burn if the engine parts are hot
enough. Don't spill coolant on a hot engine.
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