Porsche 911, 997 (USA)

Automatic transmission fluid capacity & service interval

Porsche 911, 997 (USA) automatic transmission fluid capacity ranges from 4,5 to 9 liters. Service intervals occur every 60000 miles or 72 months. The data covers 4 configurations.

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

TypeSpecifications
911 Carrera (2005-2008)
  • Use: Normal
  • Capacity 9 liter (Dry fill)
  • Capacity 4,5 liter (Service fill)
  • Change 60000 miles/ 72 months
  • Code: Tiptronic A97.01 / A97.31 5/1
911 Carrera 4 (2005-2008)
  • Use: Normal
  • Capacity 9 liter (Dry fill)
  • Capacity 4,5 liter (Service fill)
  • Change 60000 miles/ 72 months
  • Code: Tiptronic A97.01 / A97.31 5/1
911 Carrera 4S (2005-2008)
  • Use: Normal
  • Capacity 9 liter (Dry fill)
  • Capacity 4,5 liter (Service fill)
  • Change 60000 miles/ 72 months
  • Code: Tiptronic A97.01 / A97.31 5/1
911 Carrera S (2004-2008)
  • Use: Normal
  • Capacity 9 liter (Dry fill)
  • Capacity 4,5 liter (Service fill)
  • Change 60000 miles/ 72 months
  • Code: Tiptronic A97.01 / A97.31 5/1

Additional Notes

  • The Porsche 911 997 (USA) automatic transaxle carries a dry fill capacity of 9 liters across all four variants covered in the 2004-2008 specifications. A dry fill figure represents the total fluid volume required when filling a completely drained or newly assembled unit, including fluid held in the torque converter and all internal passages.
  • The service fill capacity for each variant is 4.5 liters, exactly half the dry fill volume. A service fill reflects only the fluid displaced during a routine drain procedure, since a portion of the fluid remains trapped in the torque converter and valve body even after draining.
  • Using the dry fill volume during a routine service interval would result in significant overfilling, as the residual fluid already present in the transaxle would combine with the added 9 liters. The 4.5-liter service fill figure is the operationally relevant quantity for scheduled maintenance.
  • The change interval for all four variants is set at 60,000 miles or 72 months under normal use conditions, whichever comes first. The 72-month ceiling means a vehicle accumulating low annual mileage would still require a fluid change at the six-year mark regardless of odometer reading.
  • The 911 Carrera S carries a model year range of 2004-2008, making it the only variant in the specifications with coverage beginning in 2004. The 911 Carrera, 911 Carrera 4, and 911 Carrera 4S all share a narrower 2005-2008 range within the same specification set.
  • Despite the difference in drivetrain configuration between the rear-wheel-drive Carrera variants and the all-wheel-drive Carrera 4 and Carrera 4S, the automatic transaxle fluid capacity and change interval figures are identical across all four configurations in the specifications.

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