Buick 1998 Riviera Owner's Manual page 334

0
Lubricate chassis components (or every 12 months, whichever occurs first).
0
Rotate tires. See "Tire Inspection and Rotation" in the Index for proper
(See footnote #.)
rotation pattern and adhtional information. (See footnote +.)
45,000 Miles (75 000 km)
0
Change engine oil and filter (or every 12 months, whichever occurs first).
An Emission Control Service.
I7
Lubricate chassis components (or every 12 months, whichever occurs first).
0
Rotate tires. See "Tire Inspection and Rotation" in the Index for proper
(See footnote #.)
rotation pattern and additional information. (See footnote
+.)
50,000 Miles (83 000 km)
0
Change automatic transaxle fluid and filter if the vehicle is mainly driven
under one or more of these conditions:
-
In heavy city traffic where the outside temperature regularly reaches
-
In hilly or mountainous terrain.
90°F (32°C) or higher.
(Continued)
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7-25