1996 Buick Skylark Owner's Manual - Page 302

I ShortTrip/CityMaintenanceSchedule I 42,000 Miles (70 000 km) 0Change engine.oi1 and filter every (or 3 months, whichever occurs first). An Emission ControlService; 39,000 Miles (65 000 km) 0Change engineoil and filter (or every 3 months, whichever occurs first). An Emission ControlService. 0Lubricate the suspension, steering linkage and transaxle shift linkage (or every 6 months, whichever occurs first). 1 0Rotatetires.See"TireInspectionand : Rotation" in the Index for proper rotation pattern and additional information. During tire rotation, check brake calipers for freedom of movement. Refer to the appropriate GM service manual for proper caliper service procedures. 7-13