1996 Oldsmobile Silhouette Owner's Manual - Page 317

I Short TripKity Maintenance Schedule I 33,000 Miles (55 000 km) 0Change engine oil and filter (or every 3 months, whichever occurs first). An Emission Control Service. 30,000 Miles (50 000 km) 0Change engine oil and filter (or every 3 months, whichever occurs first). An Emission Control Service. 0Lubricate chassis components; see footnote # (or every 6 months, whichever occurs first). Replace air cleaner filter. An Emission Control Service. 0Rotate tires. See "Tire Inspection and Rotation" in the Index for proper rotation pattern and additional information. During ti.re rotation, check brake calipers for freedom of movement and lubricate if required. I ACTUAL MILEAGE SERVICED B Y DATE ACTUAL MILEAGE SERVICED B Y 7-11