1994 Pontiac Firebird Owner's Manual - Page 165

Problems on the Road How to Add Coolant to the Coolant Recovery Tank If you haven't found a problem yet, but the coolant level isn't at or above the "FULL COLD' mark, add a 50/50 mixture of clean water (preferably distilled) and a proper antifreeze at the coolant recovery tank. (See "Engine Coolant" in the Index for more information about the proper coolant mix.) When the coolant in the coolant recovery tank is at or above the "FULL COLD' mark, start your vehicle. If the overheat warning continues, there's one more thing you can try. You can add the proper coolant mix directly to the radiator, but be sure the cooling system is cool before you do it. NOTICE: In cold weather, water can freeze and crack the engine, radiator, heater core and other parts. Use the recommended coolant. I . . ,164