Subaru Legacy / Outback, BN, BS (EU)
Differential fluid capacity & service interval
Subaru Legacy / Outback, BN, BS (EU) differential fluid capacity ranges from 0,8 to 1,5 liters. Service intervals include checking every 30000 km or 24 months and changing every 60000 km or 48 months. The data covers 10 configurations.
The configuration chart below lists fill volumes and service intervals for each engine and trim variant.
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Additional Notes
- The Subaru Legacy / Outback BN/BS (EU) differential fluid specifications cover two distinct assemblies across all engine variants: the front differential sourced from the CVT unit and the rear differential as a separate housing.
- The rear differential capacity is a uniform 0.8 liter across the 2.0D, 2.0T, 2.5i, and 3.6R engines for the full 2014-2019 span, indicating a consistent rear differential housing regardless of engine output.
- The CVT-sourced front differential on the 2.0D, 2.0T, and 3.6R variants carries a capacity range of 1.3-1.5 liters, while the 2.5i specifies a narrower range of 1.1-1.3 liters, pointing to a physically smaller or differently configured front differential unit in that engine variant.
- A capacity expressed as a range rather than a fixed value, as seen in both the 1.1-1.3 liter and 1.3-1.5 liter figures, typically reflects a service fill tolerance where the actual accepted volume depends on the drain level and refill method rather than a precise fixed quantity.
- Under normal use conditions, all engine variants share an identical check interval of every 30,000 km or 24 months for both the CVT-sourced front differential and the rear differential.
- The fluid change interval for all listed configurations under normal use is 60,000 km or 48 months, applying equally to both the front and rear differential assemblies across the 2.0D, 2.0T, 2.5i, and 3.6R engines.
- The 2.5i engine has a single-year entry for 2014 and a separate entry covering 2015-2019, both sharing identical capacity figures and service intervals, which indicates no specification change occurred between those model year groupings despite the separate listing.
- The 2.0T variant covers 2014-2018, a shorter span than the 2.0D and 3.6R entries which run through 2019, though the differential capacity and service interval figures remain identical between all three engine types.