1993 Buick Century Owner's Manual - Page 202

A CAUTION: Heater and radiator hoses, and other engine parts, can be very hot. Don't touch them.If you do, you canbe burned. Don't run the engine if there __ a leak.If you run the engine, it could lose all coolant. That could cause an engine fire, and you could be burned. Get any leak fixed before you drive the vehicle. The coolant should be at slightly above the"FULL or HOT" mark. If it isn't, you may have a leak in the radiator hoses, heater hoses, radiator, water pump or somewhere else in the cooling system. If there seems to be no leak, check see if the electric to engine fan is running. If the engine is overheating, the fhn should be running. If it isn't, your vehicle needs service. How t Add Coolant to the Coolant Recovery Tl[)ank o If you haven't found a problem yet, but the coolant level isn't above "ADD:' add a 50/50 mixture of clean water (preferably distilled) and the proper antifreeze the at coolant recoverytank.(See "Engine Coolant" in the Index for more information about the proper coolant x.) mi