1994 Buick Century Owner's Manual - Page 189

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"ADD" mark, add a 50/50 mixture of clean water (preferably distilled) and a proper antifreeze at ak the coolant recovery t n . (See "Engine Coolant" in the Index for more information about the proper coolant mix.) 1 NOTICE: I Engine damage from running your engine without coolant isn't covered by your warranty. I If there seems tobe no leak, check to see if the electric engine fan is running. If the engine is overheating, the fan should be running. If it isn't, your vehicle needs service. 187