Opel Astra F Classic I, M99

Automatic transmission fluid capacity & service interval

Opel Astra F Classic I, M99 automatic transmission fluid capacity ranges from 3 to 4 liters. Service intervals include checks every 24 months or 30000 km and fluid changes every 60000 km or 48 months. The data covers 4 configurations.

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

TypeSpecifications
Astra F Classic 1.6 (1999-2002)
  • Use: Normal
  • Capacity 4 liter
  • Check 24 months/ 30000 km
  • Code: AF 13-II 4/1
Astra F Classic 2.0 16V (100 kW) (1999-2002)
  • Use: Normal
  • Capacity 4 liter
  • Check 24 months/ 30000 km
  • Code: AF 20 4/1
Astra F Classic 2.0 Di (1999-2002)
  • Use: Normal
  • Capacity 3 liter
  • Check 24 months/ 30000 km
  • Code: AF 20 4/1
Astra F Classic 2.0 DTi (1999-2002)
  • Use: Normal
  • Capacity 4 liter
  • Change 60000 km/ 48 months
  • Code: AF 22 4/1

Additional Notes

  • The Opel Astra F Classic I (M99) automatic transaxle fluid capacity is listed at 4 liters for the 1.6, the 2.0 16V (100 kW), and the 2.0 DTi variants across the 1999-2002 model range.
  • The 2.0 Di stands apart from the other three variants with a transaxle fluid capacity of 3 liters, indicating a physically smaller or differently configured automatic transaxle unit.
  • A service fill capacity, as recorded here, reflects the amount of fluid required during a routine drain-and-refill service rather than a full overhaul, which would typically require a higher volume to account for fluid retained in the torque converter and passages.
  • The 1.6 and the 2.0 16V (100 kW) share an identical service interval of 24 months or 30,000 km under normal use conditions, with the service action specified as a fluid check rather than a full fluid change.
  • The 2.0 Di also carries a check interval of 24 months or 30,000 km under normal use, aligning with the petrol variants in service frequency despite holding a lower fluid volume.
  • The 2.0 DTi diesel variant follows a distinctly different service schedule, with a fluid change interval of 60,000 km or 48 months under normal use conditions, doubling both the distance and time thresholds compared to the check intervals assigned to the other three variants.
  • The distinction between a fluid check and a fluid change across the specifications is significant. A check interval requires inspection and top-up as needed, while a change interval requires full fluid replacement, representing a more involved service procedure.

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