2003 Cadillac Seville Owner's Manual - Page 284
2003 Cadillac Seville Manual
Page 284 highlights
Notice; In cold weather, water can freeze and crack the engine, radiator, heater core and other parts. Use fht? recemmendec! cm!ant and the proper coolant mixture. Adding only plainwater to your cooling system can be dangerous. Plain water, or some other liquid such as alcohol, can boil before the proper coolant mixture will. Your vehicle's coolant warning system is set for the proper coolant mixture. With plain water or the wrong mixture, your engine could get too hot but you wouldn't get the overheat warning. Your engine could catch fire and you or others could be burned. Use a 50/50 mixture of clean, drinkable water and DEX COOL@coolant. I You can be burned if you spill coolant on hot engine parts. Coolant contains ethylene glycol and it will burn if the engine parts are hot enough. Don't spill coolant on a hot engine. 5-35