Subaru Outback, BT (EU)

Coolant capacity & service interval

Subaru Outback, BT (EU) coolant capacity ranges from 8,7 to 9,3 liters. Service intervals include checks at 30000 km or 24 months, and changes at 120000 km or 72 months and 220000 km or 132 months. The data covers 4 configurations.

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

TypeSpecifications
Outback 2.4T (2022- )
  • Use: Normal
  • Capacity 8,7-9,3 liter
  • Check 30000 km/ 24 months
  • Change 120000 km/ 72 months
Outback 2.4T (2022- )
  • Use: Initial service
  • Capacity 8,7-9,3 liter
  • Check 30000 km/ 24 months
  • Change 220000 km/ 132 months
Outback 2.5i (2021- )
  • Use: Normal
  • Capacity 9,2-9,3 liter
  • Check 30000 km/ 24 months
  • Change 120000 km/ 72 months
Outback 2.5i (2021- )
  • Use: Initial service
  • Capacity 9,2-9,3 liter
  • Check 30000 km/ 24 months
  • Change 220000 km/ 132 months

Additional Notes

  • The Subaru Outback BT (EU) cooling system capacity differs between the two available engines. The 2.4T holds 8.7 to 9.3 liters, while the 2.5i holds a narrower 9.2 to 9.3 liters, placing the 2.5i at the higher end of the 2.4T range.
  • A capacity expressed as a range rather than a fixed value reflects the variation that can occur during a service fill depending on how completely air is purged from the system during refilling.
  • Both the 2.4T and 2.5i share the same coolant check interval of every 30,000 km or 24 months, regardless of use condition.
  • Under normal use, both engines carry a coolant change interval of 120,000 km or 72 months, which equals a six-year or roughly 120,000 km service life per fill.
  • The initial service condition extends the coolant change interval significantly, to 220,000 km or 132 months for both the 2.4T and 2.5i. The 132-month figure represents an 11-year service life, nearly double the normal-use interval.
  • The extended initial service interval reflects the use of a factory-fill coolant formulation that is rated for longer service life than a standard replacement fluid, which then reverts to the 120,000 km or 72-month normal interval on subsequent changes.
  • The 2.4T engine starts from the 2022 model year, while the 2.5i starts from 2021, meaning the 2.5i specifications cover a broader portion of the 2021-2022 range addressed here.

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