1994 Buick Regal Owner's Manual - Page 271

I I TO BE SERVICED (See Explanation of Scheduled Maintenance Services Following Schedules I and 11) WHEN TO PERFORM Miles (kilometers) or Months, Whichever Occurs First MILES (000) 3 6 9 12 15 30 33 36 39 42 45 48 KILOMETERS (000) 45 50 a 0 a The services shownin this schedule up to 48 000 miles (80 000 km) should be performed after 48 000 miles at the same intervals. i' * An Emission Control Service. The U.S. Environmental Protection Agency has determined that the failure perform this maintenance item will not nullify the enlission warrantyor limit recall liability to prior to the completionof vehicle useful life. General Motors. however, urges that$11 recommended maintenance services be performed at the indicated intervals and the maintenance be recorded in "Section E:Maintenance Record".