1998 Oldsmobile 88 Owner's Manual - Page 209

The coolant level should be at above the or FULL COLD 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. I NOTICE: Engine damage from running your engine without coolant isn't covered by your warranty. If there seems to be no leak, with engine on, check to the fans see if the electric engine cooling are running.If the If engine is overheating, both fans should be running. they aren't, your vehicle needs service. Heater andradiator hoses, and other engine parts, can be very hot. Don't touch them.you I f do, you can be burned. Don't run the engine if there is a leak. you run If the engine, could lose all coolant. it That could cause an engine fire,and you could be burned. Gel any leak fixed before you drive the vehicle. How to Add Coolant to the Coolant Recovery Tank If you haven't found a problem yet, but the coolant level 50/50 isn't at the FULL COLD mark, add a mixture of clean water (preferably distilled) and DEX-COOL@ engine coolant at the coolant recovery tank. (See "Engine Coolant" in the Index more information.) for 5-16