1993 Buick Park Avenue Owner's Manual - Page 262

To Check Coolant: When your engine is cold, the coolant level should be at "FULL COLD," or a little higher. When your engine is warm, the level should be up to "FULL HOT," or a little higher. ' I CAUTION: T'urning the radiatorpressure 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 #hen the engine and radiator are hot. -- - Add coolant mix at the recovery tank, but be careful not to spill it. If this light comes on, it means you're low on engine coolant. A CAUTION: To Add Coolant: If you need more coolant, add the proper mix at the coolant recovery .tank. 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.