1998 Cadillac Eldorado Owner's Manual - Page 302

Engine Coolant The cooling s stem in your vehicle isfilled with DEX-COOL J engine coolant. This coolant 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 explainsyour 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 DEX-COOL@ NOTICE: When adding coolant, it is important that you use onlyDEX-COOL@(silicate-free) coolant. If coolant other than DEX-COOL added to is the system, premature engine, heater core or radiator corrosion may result. In addition, the engine coolant will require change sooner at 30,000 miles (50 000 km) o r 24 months, whichever occurs first. Damage caused the by is use of coolant other than DEX-COOL@ not covered by your new vehicle warranty. -0 coolant will: 0 Give freezing protection down to -34°F (-37°C). Give boiling protection up to 265 "F (1 29°C). Protect against rust and corrosion. 0 Help keep the proper engine temperature. Let the warning lights and gages work as they should. 0 6-32