Skip to content

Buick Century

Maintenance specs for 3 variants of the Buick Century — from 1985 to 2005.

19851996 Buick Century

2.5L I4 (Iron Duke/Tech IV) · FWD

110 hp / 135 lb-ft

Engine Oil

Weight5W-30
Capacity4 qt
FilterPF51

Transmission

Type3-Speed Automatic (3T40)
FluidDexron III
Drain & fill6 qt
Full capacity10 qt

Coolant

TypeConventional (green)
Capacity9.7 qt
Shop coolant

Brake Fluid

TypeDOT 3
Shop DOT 3

Power Steering

TypeHydraulic
FluidGM Power Steering Fluid

Fuel

Tank16.5 gal
TypeRegular 87

Tires

Size185/75R14
Pressure (front)30 PSI
Pressure (rear)30 PSI
Shop 185/75R14 tires

Battery

Group size75
CCA630 A
Shop group 75 battery

Spark Plugs

Gap0.06 in
Shop spark plugs

Wiper Blades

Driver18"
Passenger18"
Shop wiper blades

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

19851996 Buick Century

3.3L V6 (L82/3300) · FWD

160 hp / 185 lb-ft

Engine Oil

Weight5W-30
Capacity4.5 qt
FilterPF47

Transmission

Type4-Speed Automatic (4T60-E)
FluidDexron III
Drain & fill7 qt
Full capacity12 qt

Coolant

TypeDex-Cool (orange)
Capacity11.5 qt
Shop coolant

Brake Fluid

TypeDOT 3
Shop DOT 3

Power Steering

TypeHydraulic
FluidGM Power Steering Fluid

Fuel

Tank16.5 gal
TypeRegular 87

Tires

Size195/75R14
Pressure (front)30 PSI
Pressure (rear)30 PSI
Shop 195/75R14 tires

Battery

Group size75
CCA630 A
Shop group 75 battery

Spark Plugs

Gap0.06 in
Shop spark plugs

Wiper Blades

Driver18"
Passenger18"
Shop wiper blades

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

19972005 Buick Century

3.1L V6 (LG8) · FWD

175 hp / 195 lb-ft

Engine Oil

Weight5W-30
Capacity4.5 qt
FilterPF47

Transmission

Type4-Speed Automatic (4T65-E)
FluidDexron III/VI
Drain & fill7 qt
Full capacity12 qt

Coolant

TypeDex-Cool (orange)
Capacity11.7 qt
Shop coolant

Brake Fluid

TypeDOT 3
Shop DOT 3

Power Steering

TypeHydraulic
FluidGM Power Steering Fluid

Fuel

Tank17.5 gal
TypeRegular 87

Tires

Size205/70R15
Pressure (front)30 PSI
Pressure (rear)30 PSI
Shop 205/70R15 tires

Battery

Group size75
CCA690 A
Shop group 75 battery

Spark Plugs

Gap0.06 in
Shop spark plugs

Wiper Blades

Driver22"
Passenger22"
Shop wiper blades

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