1997 Chevrolet Malibu Owner's Manual - Page 204

NOTICE: Adding only plain water to your cooling system can be dangerous. Plain water, some other or liquid like alcohol, boil beforethe proper can coolant mix will. Your vehicle'scoolant warning system is set the proper coolant mix. With for plain water or the wrong mix,your engine could get toohot but you wouldn't getthe overheat warning. Your engine could catch fire and you or others could beburned. Use a 50/50 mix of clean water and DEX-COOL fM coolant. In cold weather, water can freeze and crack the engine, radiator, heater core and other parts. So use the recommended coolant. A CAUTION: You can be burned if you spill coolanton hot engine parts. Coolant contains ethylene glycol and itwill burn if the engineparts arehot a enough. Don't spill coolant on hot engine. I