Opel Kapitän

Automatic transmission fluid capacity & service interval

Opel Kapitän automatic transmission fluid capacity ranges from 2,5 to 4,5 liters. Service intervals include checks at 10000 km or 6 months and changes at 30000 km or 40000 km and 24 months. The data covers 3 configurations.

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

TypeSpecifications
Kapitän 2.8 H (1969-1970)
  • Use: Normal
  • Capacity 2,5 liter
  • Check 10000 km/ 6 months
  • Change 40000 km/ 24 months
  • Code: THM 180 3/1
Kapitän 2.8 S (1969-1970)
  • Use: Normal
  • Capacity 2,5 liter
  • Check 10000 km/ 6 months
  • Change 40000 km/ 24 months
  • Code: THM 180 3/1
Kapitän 2.8 (1966-1968)
  • Use: Normal
  • Capacity 4,5 liter
  • Check 10000 km
  • Change 30000 km
  • Code: THM 180 3/1

Additional Notes

  • The Opel Kapitän 2.8 (1966-1968) carries a notably higher automatic transmission fluid capacity of 4.5 liters compared to the 2.5 liters specified for the 1969-1970 variants, reflecting a difference in transmission design between the two generations.
  • The 2.5-liter capacity shared by the Kapitän 2.8 H and 2.8 S (1969-1970) represents a reduction of 2 liters relative to the earlier 2.8, which points to a physically smaller or differently configured transmission unit in the later models.
  • The 1966-1968 Kapitän 2.8 specifies a fluid change interval of 30,000 km under normal use conditions, while both 1969-1970 variants extend that interval to 40,000 km under the same use condition.
  • The 1969-1970 Kapitän 2.8 H and 2.8 S introduce a time-based dimension to the service schedule, pairing the 40,000 km change interval with a 24-month ceiling, whichever comes first.
  • A similar dual-criterion structure applies to the fluid check interval for the 1969-1970 variants, where 10,000 km is paired with a 6-month limit, whereas the 1966-1968 Kapitän 2.8 specifies only a distance-based check interval of 10,000 km.
  • All three configurations are rated under normal use conditions, meaning the intervals listed do not account for more demanding operating environments that would typically shorten service schedules.
  • The Kapitän 2.8 H and 2.8 S share identical automatic transmission fluid specifications across capacity, check interval, and change interval, indicating no differentiation in transmission servicing requirements between the two 1969-1970 trim levels.

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