1997 Oldsmobile Achieva Owner's Manual - Page 254

When to Check and What to Use Refer to theMaintenance Schedule to determine how often you should check the fluid level in your clutch master cylinder reservoir and for the proper fluid. See "Owner Checks and Services" and "Recommended Fluids and Lubricants" in the Index. Engine Coolant The cooling system in your vehicle is filled with new DEX-COOL@engine coolant. This coolant is designed to remain in your vehicle for5 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 50150 mixture of water and the proper coolant for your Oldsmobile will: 0 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. How to Check If you can see fluid in the reservoir, the level is acceptable.