1998 Buick Riviera Owner's Manual - Page 333
1998 Buick Riviera Manual
Page 333 highlights
Long Trip/Highway Maintenance Schedule I 30,000 Miles (50 000 km) 0 0 I DATE MILEAGE I 37,500 Miles (62 500 km) Change engine oil and filter (or every months, whichever occurs first). 12 An Emission Control Service. I DATE I ACTUAL MILEAGE I SERVICEDBY I I 7-24
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