2003 Chevrolet Corvette Owner's Manual - Page 261

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 overheat the 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. Notice: In cold weather, water can freeze and crack the engine, radiator, heater core and other parts. Use the recommended coolant and the proper coolant mixture. Adding only plai Mater to ur cooling system can be dangerous. Plain water, or some other liquid such as alcohol, can boil before the proper coolant mixture will. I I CAUTION: (Continued) I You can be bul Id i' ou 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. I 5-32