1996 Buick Roadmaster Owner's Manual - Page 311

I Short Trip/City Maintenance Schedule I 99,000 Miles (165 000 km) Change engine oil and filter (or every 3 months, whichever occurs first). An Emission Control Service. 96,000 Miles (160 000 km) 0Change engine oil and filter (or every 3 months, whichever occurs first). An Emission Control Service. * * [7 Lubricate the suspension, steering linkage, parking brake guides, underbody contact points and linkage (or every 6 months, whichever occurs first). Change the rear axle gear lubricant if vehicle is used to pull a trailer. DATE ACTUAL MILEAGE SERVICED BY: DATE ACTUAL MILEAGE SERVICED BY: 7-25