1997 Oldsmobile Achieva Owner's Manual - Page 255

Use a mixtureof one-half clean water (preferably distilled) and one-half DEX-COOL@coolant which When adding coolant, it is important that you use won't damage aluminum parts. If you use this mixture, only DEX-COOL@(silicate-free) coolant. you don't need to add anything else. If coolant is other than DEX-COOL@ added to is the system, premature engine, heater core or radiator corrosion may result. In addition, the engine coolantwill require change sooner at 30,000 miles (50 000 km) or24 months, Adding only plain water to your cooling system whichever occurs first. Damage caused the use by can be dangerous. Plain water, or some other of coolant other than DEX-COOL' is not liquid like alcohol, can before the proper boil covered by our new vehicle warranty. coolant mixwill. Your vehicle's coolant warning system is set for the proper coolant With mix. plain water or the wrong your engine could mix, get too hot but wouldn't get the overheat you warning. Your engine could catch fire and or you others could be burned. a 50/50 mix of clean Use water and DEX-COOL%oolant. NOTICE: What to Use --