1996 Oldsmobile Aurora Owner's Manual - Page 266

Engine Coolant The cooling system in your vehicle is filled with new DEX-COOL TM (orange-colored, silicate-free) engine coolant. This coolant is designed to remain in your vehicle for 5 years or 100,000 miles (1 000 km), 66 whichever occurs first. The following explains your cooling system and how to add coolant whenit is low. If you have a problem with engine overheating, see "Engine Overheating" in the Index. A 50/50 mixture of water and theproper coolant for your Aurora will: 0 NOTICE: When adding coolantit is important that you 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) or 24 months whichever occurs first. TM -- 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 mixtureof one-half cEean, water (preferably distilled) and one-half DEX-COOL (orange-colored, silicate-free) antifreeze that meets GM Specification 6277M, which won't damage aluminum parts. Use GM Engine Coolant Supplement (sealer) (GM Part No. 3634621) with anycomplete coolant change. If you use this mixture, you don't need add anything to else. A special procedure is required adding sealer; for see the Aurora Service Manual. (To order a service manual, see "Service Publications'' in the Index.) TM