1997 Oldsmobile Cutlass Supreme Owner's Manual - Page 239

Automatic Transaxle Fluid It is not necessary to check the transaxle fluid level. A transaxle fluid leak is the only reason for fluid loss.If a leak occurs, take the vehicle to your Oldsmobile retail facility Service Department and have it repaired as soon as possible. You may also have your fluid level checked by your retailer or service center when you have your oil changed. A 50/50 mixture of water and the proper coolant for your Oldsmobile will: 0 0 0 0 Give freezing protection down to -34°F (-37°C). Give boiling protection up to 265 "F (129O C). Protect against rust and corrosion. Help keep the proper engine temperature. Let the warning lights and gages work as they should. Engine Coolant When adding coolant, it is important that you use only DEX-COOL (silicate-free) coolant. If silicated coolant is added to the system, The following explains your cooling system and how to premature engine, heater core or radiator add coolant when it is low.If you have a problem with corrosion may result. In addition, the engine engine overheating, see "Engine Overheating" in coolant will require change soonerat the Index. 30,000 miles (50 000 km) or 24 months, whichever occurs first. TM TM The cooling systemin your vehicle is filled with new DEX-COOL" engine coolant. This coolant is designed to remainin your vehiclefor 5 years or 150,000 miles (240 000 km), whichever occurs first, if you add only DEX-COOL extended life coolant. NOTICE: --