1997 Chevrolet Blazer Owner's Manual - Page 278

Engine Coolant The cooling s stem in your vehicle is filled with DEX-COOL J engine coolant. This cooIant is designed to remain in your vehicle for 5 years or 150,000 miles (240 000 km) whichever occurs first, if you add only DEX-COOL' extended life coolant. The following explains your cooling system and how to add coolant when it is low. If you have a problem with engine overheating, see "Engine Overheating" in the Index. A 50/50 mixture of water and the DEX-COOL@coolant for your vehicle will: NOTICE: When adding coolant,it is important thatyou use only DEX-COOL@(silicate-free) coolant. If coolant other than DEX-COOL@ added to is I the system, premature engine, heater coreor radiator corrosion may result. In addition, the engine coolant will require change sooner at 30,000 miles (50 000 km) or24 months, whichever occurs first. Damage caused the use by of coolant other than DEX-COOL@ not is covered by your new vehicle warranty. -- 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. 6-23