1998 Cadillac Seville Owner's Manual - Page 258

A CAUTION: Adding only plain water to your cooling system can be dangerous. Plain water, some other or liquid like alcohol, boil before the can proper coolant mixturewill. Your vehicle's coolant warning system is set the proper coolant for mixture. With plain water the wrong mixture, or your engine could get too but you wouldn't hot get the overheat warning. Your engine could catch fire and you or others could be burned. Use a 50150 mixture of clean waterand DEX-COOL@ coolant. NOTICE: In cold weather, water can freeze crack the and engine, radiator,heater core and other parts. So use the recommended coolant. A CAUTION: You can beburned if you spill coolant on hot engine parts. Coolant contains ethylene glycol and it will burn if the engine parts arehot enough. Don't spill coolant on engine. a hot