1997 Buick Regal Owner's Manual - Page 298

Engine Coolant The cooling s stem in your vehicle is filled with DEX-COOL 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. J NOTICE: When adding coolant, it is important thatyou use onlyDEX-COOL@(silicate-free) coolant. If coolant other thanDEX-COOL is added to 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) or 24 months, whichever occurs first. Damage caused by the use of coolant other thanDEX-COOL' is not covered by your new vehiclewarranty. The following explains your cooling system and how to add coolant when it is low. If you have aproblem with engine overheating or if you need to add coolant to your radiator, see "Engine Overheating" in Index. the -- A 50/50 mixture of water and DEX-COOL@ coolant will: 0 Give freezingprotection down to -34 O F (-37 O C). Give boiling protection up to 265 O F ( 129O C). Protect against rust and corrosion. Help keep the proper engine temperature. 0 0 Let the warning lights and gages work as they should.