1996 Oldsmobile 88 Owner's Manual - Page 255

NOTICE: If you use an impropercoolant mix, your engine could overheat andbe badly damaged. The repair cost wouldn't be covered by your mix warranty. Too much water in the can freeze and crack the engine, radiator, heater core and other parts. If you have to add coolant more than times a year, four have your retailer check your cooling system. Checking Coolant I NOTICE: If you use the propercoolant, you don't have to add extra inhibitors or additives which claim.to improve the system. These can be harmful. I When your engine is cold, the coolant level should be at FULL COLD or a little higher. When your engine is warm, the level should be to FULL HOT or a up little higher. 6-23