Subaru Legacy / Outback, BE, BH, BT (USA / CAN)

Automatic transmission fluid capacity & service interval

Subaru Legacy / Outback, BE, BH, BT (USA / CAN) models utilize automatic transmission fluid with a capacity of 9,3 liters. Service intervals consist of checking every 30000 miles or 30 months and changing every 15000 miles. The data covers 4 configurations.

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

TypeSpecifications
  • Legacy / Outback 3.0 4WD (2000-2004)
  • Automatic/transferbox
  • Use: Normal
  • Capacity 9,3 liter
  • Check 30000 miles/ 30 months
  • Code: 4/1
  • Legacy / Outback 3.0 4WD (2000-2004)
  • Automatic/transferbox
  • Use: Severe
  • Capacity 9,3 liter
  • Change 15000 miles
  • Code: 4/1
  • Legacy / Outback 2.5 4WD (1999-2004)
  • Automatic/transferbox
  • Use: Normal
  • Capacity 9,3 liter
  • Check 30000 miles/ 30 months
  • Code: 4/1
  • Legacy / Outback 2.5 4WD (1999-2004)
  • Automatic/transferbox
  • Use: Severe
  • Capacity 9,3 liter
  • Change 15000 miles
  • Code: 4/1

Additional Notes

  • The Subaru Legacy / Outback BE, BH, BT automatic transmission and transferbox combined capacity is 9.3 liters across both the 2.5 4WD and 3.0 4WD configurations, a figure that reflects a total system fill rather than a partial drain-and-fill service quantity.
  • Under normal use conditions, the 2.5 4WD (1999-2004) calls for a fluid check at 30,000 miles or 30 months, whichever comes first, rather than a full fluid change at that interval.
  • Under severe use conditions, the same 2.5 4WD configuration moves to a fluid change interval of 15,000 miles, cutting the normal-use check interval in half and replacing a check with an actual fluid replacement.
  • The 3.0 4WD (2000-2004) carries the same 9.3-liter capacity as the 2.5 4WD, indicating the automatic transmission and transferbox assembly is shared between the two engine variants despite the difference in displacement.
  • The 3.0 4WD mirrors the 2.5 4WD in its severe-use interval as well, with a fluid change specified at 15,000 miles under those conditions.
  • The 2.5 4WD coverage begins in 1999, while the 3.0 4WD coverage begins in 2000, reflecting the later introduction of the six-cylinder variant within the BE, BH, BT generation.

Other Systems