1993 Pontiac Bonneville Owner's Manual - Page 241

Service & Appearance Care A' Adding Coolant To Check Coolant: When your engine is cold, the coolant level should be between the FULL COLD mark and FULL HOT. When your engine is warm, the level should be up to FULL HOT, or a little higher. If you have the optional low coolant warning light and it comes on when your engine is running, you're low on coolant. Or, if you have the optional Driver Information Center and the warning LOW COOLANT appears, you're low on coolant. To Add Coolant: If you need more coolant, add the proper mix at the coolant recovery tank. I I Turning the radiator pressure 1 1 cap when the engine and raalator are hot can allow steam and scalding liquids to blow out and bum you badly. With the coolant recovery t n , you will ak 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. m . . 240