Subaru Tribeca (B9) (USA / CAN)

Automatic transmission fluid capacity & service interval

Subaru Tribeca (B9) (USA / CAN) automatic transmission fluid capacity is 9,8 liters. Service intervals include checking every 30000 miles or 30 months and changing every 15000 miles or 15 months. The data covers 8 configurations.

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

TypeSpecifications
Tribeca (2011-2014)
  • Use: Normal
  • Capacity 9,8 liter
  • Check 30000 miles/ 30 months
  • Code: 5/1
Tribeca (2011-2014)
  • Use: Severe
  • Capacity 9,8 liter
  • Change 15000 miles/ 15 months
  • Code: 5/1
Tribeca (2009-2011)
  • Use: Normal
  • Capacity 9,8 liter
  • Check 30000 miles/ 30 months
  • Code: 5/1
Tribeca (2009-2011)
  • Use: Severe
  • Capacity 9,8 liter
  • Change 15000 miles/ 15 months
  • Code: 5/1
Tribeca (2008-2009)
  • Use: Normal
  • Capacity 9,8 liter
  • Check 30000 miles/ 30 months
  • Code: 5/1
Tribeca (2008-2009)
  • Use: Severe
  • Capacity 9,8 liter
  • Change 15000 miles/ 15 months
  • Code: 5/1
B9 Tribeca (2006-2008)
  • Use: Normal
  • Capacity 9,8 liter
  • Check 30000 miles/ 30 months
  • Code: 5/1
B9 Tribeca (2006-2008)
  • Use: Severe
  • Capacity 9,8 liter
  • Change 15000 miles/ 15 months
  • Code: 5/1

Additional Notes

  • The Subaru Tribeca (B9) automatic transmission carries a fluid capacity of 9.8 liters across all listed configurations spanning 2006-2014, indicating a full overhaul or service fill volume rather than a partial drain-and-fill quantity.
  • Under normal use conditions, the service action across all model year groups is a fluid check at 30,000 miles or 30 months, whichever comes first, rather than a full fluid change.
  • Under severe use conditions, the interval shifts to a fluid change at 15,000 miles or 15 months, which is half the distance and time threshold applied under normal use.
  • The 9.8-liter capacity figure remains unchanged across the B9 Tribeca (2006-2008), Tribeca (2008-2009), Tribeca (2009-2011), and Tribeca (2011-2014) generation groupings, reflecting consistency in the automatic transmission unit used throughout the production span.
  • The distinction between a check under normal conditions and a change under severe conditions represents a meaningful difference in service scope, as a check does not necessarily involve draining and refilling the fluid, while a change does.
  • The time-based interval of 30 months under normal use runs parallel to the 30,000-mile threshold, meaning whichever limit is reached first would govern the service timing for lower-mileage vehicles.
  • For severe use, the 15-month time interval mirrors the 15,000-mile distance limit, applying the same dual-trigger logic and making the severe schedule particularly relevant for vehicles driven in demanding conditions regardless of annual mileage.

Other Systems