Acura RDX, TB1, TB2 (USA / CAN)

Differential fluid capacity & service interval

Acura RDX, TB1, TB2 (USA / CAN) models require differential fluid with a capacity range of 2,5 to 2,8 liters. The service interval for fluid changes is 24000 km. The data covers 4 configurations.

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

TypeSpecifications
  • RDX 2.3 Turbo SH-AWD (2011-2012)
  • Rear
  • Use: Normal
  • Capacity 2,5-2,8 liter
  • RDX 2.3 Turbo SH-AWD (2011-2012)
  • Rear
  • Use: Severe
  • Capacity 2,5-2,8 liter
  • Change 24000 km
  • RDX 2.3 Turbo SH-AWD (2007-2010)
  • Rear
  • Use: Normal
  • Capacity 2,5-2,8 liter
  • RDX 2.3 Turbo SH-AWD (2007-2010)
  • Rear
  • Use: Alternative (acceptable)
  • Capacity 2,5-2,8 liter

Additional Notes

  • The rear differential capacity across all Acura RDX TB1/TB2 2.3 Turbo SH-AWD configurations from 2007-2012 falls within a 2.5-2.8 liter range, which is consistent with a service fill volume rather than a full overhaul drain, as overhaul procedures typically account for additional fluid retained in passages and the torque coupling assembly.
  • The 2007-2010 RDX 2.3 Turbo SH-AWD rear differential carries the same 2.5-2.8 liter capacity under both normal and alternative (acceptable) use conditions, indicating the fluid volume requirement does not shift between those two fluid designations.
  • The 2011-2012 RDX 2.3 Turbo SH-AWD rear differential shares the identical 2.5-2.8 liter capacity with the earlier 2007-2010 generation, meaning no mechanical redesign of the differential housing introduced a measurable change in fluid volume between those model year groups.
  • A change interval of 24,000 km is specified for the 2011-2012 RDX 2.3 Turbo SH-AWD rear differential under severe use conditions, a notably shorter cycle that reflects the accelerated fluid degradation associated with high-stress driving patterns such as towing, frequent low-speed maneuvering, or operation in extreme temperatures.

Other Systems