Buick Terraza (USA / CAN)

Coolant capacity & service interval

Buick Terraza (USA / CAN) coolant capacity ranges from 10,2 to 12,2 liters. Service intervals include checking every 12 months and changing every 240000 km or 60 months. The data covers 4 configurations.

The configuration chart below lists fill volumes and service intervals for each engine and trim variant.

TypeSpecifications
Terraza 3.9 V6 (2005-2007)
  • Use: Normal
  • Capacity 10,2-12,2 liter
  • Check 12 months
  • Change 240000 km/ 60 months
Terraza 3.9 V6 AWD (2005-2007)
  • Use: Normal
  • Capacity 10,2-12,2 liter
  • Check 12 months
  • Change 240000 km/ 60 months
Terraza 3.5 V6 (2004-2006)
  • Use: Normal
  • Capacity 10,7-12,2 liter
  • Check 12 months
  • Change 240000 km/ 60 months
Terraza 3.5 V6 AWD (2004-2006)
  • Use: Normal
  • Capacity 10,7-12,2 liter
  • Check 12 months
  • Change 240000 km/ 60 months

Additional Notes

  • The Buick Terraza (USA / CAN) cooling system capacity is expressed as a range rather than a fixed value across all configurations, reflecting variation between a dry fill after a full overhaul and a standard service fill where residual coolant remains in the system.
  • The 3.5 V6 and 3.5 V6 AWD configurations, covering model years 2004-2006, share an identical cooling system capacity range of 10.7-12.2 liters under normal use conditions.
  • The 3.9 V6 and 3.9 V6 AWD configurations, covering model years 2005-2007, carry a capacity range of 10.2-12.2 liters under normal use conditions, with the lower bound sitting 0.5 liters below the equivalent figure for the 3.5 V6 configurations.
  • The upper bound of 12.2 liters is consistent across all four configurations, while the lower bound differs between the 3.5 and 3.9 engine families.
  • All four configurations share the same coolant change interval of 240,000 km or 60 months under normal use, meaning the service schedule does not vary between the 3.5 and 3.9 engine families or between FWD and AWD drivetrains.
  • The 60-month interval translates to a five-year coolant change cycle, which is consistent with long-life coolant formulations typically used in factory-fill applications of that era.
  • A separate check interval of 12 months is specified for all configurations under normal use, indicating that coolant condition and level are to be inspected annually between full change intervals.

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