1997 Oldsmobile Cutlass Owner's Manual - Page 204
1997 Oldsmobile Cutlass Manual
Page 204 highlights
I NOTICE: I Adding only plain water to your cooling system can be dangerous. Plain water, some other or liquid like alcohol, can boil before proper the coolant mix will. Your vehicle's coolant warning system is set the proper coolant mix. With for plain wateror the wrongmix, your engine could get too hot you wouldn't getthe overheat but warning. Your engine could catch fire you or and others could be burned. Use a 50/50 mix of clean water and DEX-COOL coolant. TM In cold weather, water can freeze crack the and engine, radiator, heater core and other parts. So use the recommended coolant. c You can beburned if you spill coolant on hot engine parts. Coolant contains ethylene glycol and it will burn if the engineparts arehot enough. Don't spill coolant on a hot engine.