1993 Buick Century Owner's Manual - Page 285

The services shown in this schedule to 45,000 miles (75 000 km)are tobe up performed after45,000 miles at the same intervals. MILES (000) 7.5 12.5 15 I 22.5 37.5 1 30 50 I 37.5 62.5 I 45 75 KILOMETERS (000) I 25 I I 1. I I 0 I 0 I 0 I 0 I 0 I 0 I 0 I 0 I I I I I 0 I I I 283