1998 Buick Regal Owner's Manual - Page 343

I MaintenanceSchedule - I In hilly or mountainous terrain. - When doing frequent trailer towing. - Uses such as found in taxi, police or delivery service. If you donot use your vehicle under anyo these conditions,the fluid and f filter donot require changing. 52,500 Miles (87 500 km) Check Oil Life Monitor. If engine oil and filter are changed,reset monitor. See "Engine Oil" in the Index. An Emission Control Service. (See footnote *.) 0 Rotate tires. See "Tire Inspection and Rotation" in the Index for proper rotation pattern and additional information. (See footnote +.) DATE I 60,000 Miles (100 000 km) Check Oil Life Monitor. If engine oil and filter are changed,reset monitor. See "Engine Oil" in the Index. An Emission Control Service. (See footnote *.) Replace passenger compartment airfilter. ACTUAL (Continued) 7-9