1996 Buick Roadmaster Owner's Manual - Page 242

Engine Coolant The cooling systemin your vehicleis filled with new DEX-COOL (orange-colored, silicate-free) engine coolant. This coolantis designed to remain in your vehicle for 5 years or 100,000 miles (1 000 km), 66 whichever occursfirst. 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. NOTICE: When adding coolantit is important thatyou use DEX-COOL (orange-colored, silicate-free) coolant meetingGM Specification 6277M. If silicated coolant 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) or24 months, whichever occurs first. TM -- A 50/50 mixture of water and the proper coolant for your Chevrolet will: Give freezing protection down to -34°F (-37°C). Give boiling protection upto 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.