Buick LeSabre (USA / CAN)

Coolant capacity & service interval

Buick LeSabre (USA / CAN) requires coolant with a capacity of 9,5 liters. Service intervals occur every 240000 km or 60 months. The data covers 2 configurations.

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

TypeSpecifications
LeSabre 3.8 V6 (2004-2005)
  • Use: Normal
  • Capacity 9,5 liter
  • Change 240000 km/ 60 months
LeSabre 3.8 V6 (1999-2003)
  • Use: Normal
  • Capacity 9,5 liter
  • Change 240000 km/ 60 months

Additional Notes

  • The Buick LeSabre (USA / CAN) 3.8 V6 carries a coolant system capacity of 9.5 liters across both the 1999-2003 and 2004-2005 model year spans, reflecting a full cooling system service fill rather than a partial top-off volume.
  • A 9.5-liter capacity is consistent with a V6 engine cooling circuit that includes the engine block, cylinder head passages, heater core, and radiator combined, which together account for a relatively moderate total volume in a full-size sedan platform.
  • The service interval for the 1999-2003 3.8 V6 is set at 240,000 km or 60 months under normal use conditions, placing coolant changes on a long-life schedule rather than a conventional short-cycle replacement program.
  • The 2004-2005 3.8 V6 shares the identical 240,000 km / 60-month interval under normal use, indicating no revision to the coolant change schedule between the earlier and later production spans despite the model year separation.
  • A 60-month interval corresponds to a five-year replacement cycle, which is characteristic of extended-life coolant formulations designed to maintain corrosion inhibitor effectiveness over a prolonged service period.
  • The alignment of both capacity and interval values across the 1999-2003 and 2004-2005 configurations suggests the 3.8 V6 cooling system architecture remained unchanged through the full 1999-2005 production span covered by these specifications.

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