Opel Manta A

Automatic transmission fluid capacity & service interval

Opel Manta A automatic transmission fluid capacity is 2,5 liters. Service intervals include normal use. Data covers 2 configurations.

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

TypeSpecifications
Manta 1.6 S (1970-1975)
  • Use: Normal
  • Capacity 2,5 liter
  • Code: THM 180 3/1
Manta 1.9 S (1970-1975)
  • Use: Normal
  • Capacity 2,5 liter
  • Code: THM 180 3/1

Additional Notes

  • Both the 1.6 S and 1.9 S variants of the Opel Manta A share an identical automatic transmission fluid capacity of 2.5 liters, indicating no difference in transmission hardware between the two engine configurations for this service point.
  • The 2.5-liter figure represents a service fill capacity, which typically refers to the amount of fluid required during a routine drain and refill rather than a full overhaul or dry fill of the transmission assembly.
  • The capacity specification applies under normal use conditions for both the 1.6 S and 1.9 S, meaning the 2.5-liter figure is associated with standard operating circumstances rather than severe or heavy-duty service.
  • Coverage spans the full 1970-1975 production range for both variants, with no variation in the 2.5-liter capacity recorded across any year within that period for either engine displacement.

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