Subaru Legacy / Outback, BW, BT (USA / CAN)
Differential fluid capacity & service interval
Subaru Legacy / Outback, BW, BT (USA / CAN) differential fluid capacity ranges from 0,8 to 1,3 liters. Service intervals include checks at 30000 miles or 30 months and changes at 15000 miles or 15 months. The data covers 16 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 carries a front differential fluid capacity of 1.2 liters across both the 2.4T and 2.5i engines for the 2019-2022 model range, while the rear differential holds a smaller 0.8 liters across all configurations in that same period.
- The front differential capacity for the 2.5i engine starting from 2022 is listed as a range of 1.2-1.3 liters, which is a slight departure from the fixed 1.2-liter figure seen on the 2019-2022 2.5i and both generations of the 2.4T.
- Under normal use conditions, both the front and rear differentials are scheduled for a fluid check at 30,000 miles or 30 months, rather than a full fluid change, meaning the interval is an inspection point rather than a mandatory drain-and-fill.
- Under severe use conditions, the interval shifts to a fluid change at 15,000 miles or 15 months for both the front and rear differentials, cutting the service interval in half compared to the normal use check schedule.
- The rear differential capacity of 0.8 liters remains consistent across all engine variants and both configuration periods covered in the specifications, showing no variation between the 2.4T and 2.5i or between the pre-2022 and 2022-onward entries.
- The 2.4T engine configurations from 2019-2022 and from 2022 onward share identical front and rear differential capacities and identical service intervals, with no differentiation in fluid volume or timing between the two configuration periods.