Buick Century
Maintenance specs for 3 variants of the Buick Century — from 1985 to 2005.
1985–1996 Buick Century
2.5L I4 (Iron Duke/Tech IV) · FWD
110 hp / 135 lb-ft
Transmission
Type3-Speed Automatic (3T40)
FluidDexron III
Drain & fill6 qt
Full capacity10 qt
Power Steering
TypeHydraulic
FluidGM Power Steering Fluid
Fuel
Tank16.5 gal
TypeRegular 87
Service Intervals
Oil change3,000 mi
Trans service30,000 mi
Coolant flush30,000 mi
Spark plugs30,000 mi
Timinggear (no scheduled replacement)
Air filter45,000 mi
Cabin filter22,500 mi
Drive belt60,000 mi
1985–1996 Buick Century
3.3L V6 (L82/3300) · FWD
160 hp / 185 lb-ft
Transmission
Type4-Speed Automatic (4T60-E)
FluidDexron III
Drain & fill7 qt
Full capacity12 qt
Power Steering
TypeHydraulic
FluidGM Power Steering Fluid
Fuel
Tank16.5 gal
TypeRegular 87
Service Intervals
Oil change3,000 mi
Trans service50,000 mi
Coolant flush60,000 mi
Spark plugs60,000 mi
Timingchain (no scheduled replacement)
Air filter45,000 mi
Cabin filter22,500 mi
Drive belt60,000 mi
1997–2005 Buick Century
3.1L V6 (LG8) · FWD
175 hp / 195 lb-ft
Transmission
Type4-Speed Automatic (4T65-E)
FluidDexron III/VI
Drain & fill7 qt
Full capacity12 qt
Power Steering
TypeHydraulic
FluidGM Power Steering Fluid
Fuel
Tank17.5 gal
TypeRegular 87
Service Intervals
Oil change5,000 mi
Trans service50,000 mi
Coolant flush150,000 mi
Spark plugs100,000 mi
Timingchain (no scheduled replacement)
Air filter45,000 mi
Cabin filter22,500 mi
Drive belt60,000 mi