1997 Chevrolet Corvette Owner's Manual - Page 258

A 50/50 mixture of water andDEX-COOL@ coolant will: Give freezing protection down to -34°F (-37°C). Give boiling protection up to 265 "F (129"C). Protect against rust and corrosion. Help keep the proper engine temperature, Let the warning lights and gages work as they should. What to Use Use a mixture of one-half clean water (preferably distilled) and one-half DEX-COOL' coolant which won't damage aluminum parts. If you use this mixture, you don't need to add anything else. NOTICE: When adding coolant, it is important that use you only DEX-COOL@(silicate-free) coolant. If coolant other than DEX-COOL@ is added to the system, premature engine, heater core or radiator corrosionmay result. In addition, the engine coolantwill require change sooner at 30,000 miles (50 000 km) or24 months, by whichever occurs first. Damage caused the use of coolant other than DEX-COOL@ is not covered by your new vehicle warranty. I -- Adding only plain water to your cooling system can be dangerous. Plain water,r some other o liquid like alcohol, can boil before proper the coolant mixwill. Your vehicle's coolant warning mix. system is set for the proper coolant With plain water or the wrong your engine could mix, get too hot but wouldn't get the overheat you you warning. Your engine could catch fire and or others could be burned. a 50/50 mix of clean Use water and DEX-COOL@ coolant. 6-23