1997 Oldsmobile Cutlass Supreme Owner's Manual - Page 319

100,000 Miles (166 000 km) (Continued) 150,000 Miles (240 000 km) Drain, flush and refill cooling system (or every60 months since last service, whichever occurs first).See "Engine Coolant" in the Index for what to use. Inspect hoses. Clean radiator, condenser, pressure cap and neck. Pressure test the cooling system and pressure cap. An Emission Control Service. - In hilly or mountainous terrain. - When doing frequenttrailer towing. - Uses such as found in taxi, police or delivery service. I f you donot use your vehicle under anyof these conditions, the fluid and filter donot require changing. I I DATE ACTUAL MILEAGE SERVICED BY: DATE ACTUAL MILEAGE 7-56 7 SERVICED BY: