Tatra 815

Transfer case fluid capacity & service interval

Tatra 815 transfer case fluid capacity is 10,5 liters. Service intervals are 90000 km or 36 months. Data covers 3 configurations.

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

TypeSpecifications
T 815-2 260S25 TERRNo.1, 3B-928-10 (1996- )
  • Use: Normal
  • Capacity 10,5 liter
  • Change 90000 km/ 36 months
T 815-2 260S25 TERRNo.1, 3B-928-50 (1996- )
  • Use: Normal
  • Capacity 10,5 liter
  • Change 90000 km/ 36 months
T 815-2 260S25 TERRNo.1, 3B-928-60 (1996- )
  • Use: Normal
  • Capacity 10,5 liter
  • Change 90000 km/ 36 months

Additional Notes

  • The Tatra 815 transfer case fluid capacity across the T 815-2 260S25 TERRNo.1 configurations — 3B-928-10, 3B-928-50, and 3B-928-60 — is 10.5 liters, which reflects a service fill volume consistent with a heavy-duty multi-axle transfer box of substantial internal size.
  • All three configurations share an identical change interval of 90,000 km or 36 months under normal use conditions, meaning whichever threshold is reached first would govern the service timing in practice.
  • The 36-month time-based limit runs parallel to the distance-based interval, which is relevant for vehicles that accumulate mileage slowly and might otherwise defer fluid changes beyond a reasonable calendar period.
  • A 90,000 km drain interval for transfer case fluid is notably extended compared to many lighter commercial vehicles, reflecting the engineering expectations placed on heavy-duty truck drivetrain components operating under normal conditions.
  • The uniform 10.5-liter capacity across the 3B-928-10, 3B-928-50, and 3B-928-60 variants indicates no meaningful internal volume difference between those three transfer box configurations despite their distinct designation suffixes.

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