1996 Oldsmobile Achieva Owner's Manual - Page 207
1996 Oldsmobile Achieva Manual
Page 207 highlights
plain water or the wrong your engine could mix, get too hotbut you wouldn't get the overheat warning. Your engine could catch fire and you or others could be burned. Use a 50/50 mix of clean water and DEX-COOL antifreeze. TM NOTICE: r Adding only plain water to your cooling system can be dangerous. Plain water,or some other liquid like alcohol, can boil before the proper coolant mix will. Your vehicle's coolant warning system is set for the proper coolant mix. With CAUTION: (Continued) In cold weather, water can freeze and crack the So engine, radiator, heater core and other parts. use the recommended coolant. 1 IYou 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.