Austin 1800/2200 (Balanza), ADO17

Automatic transmission fluid capacity & service interval

Austin 1800/2200 (Balanza), ADO17 uses automatic transmission fluid with a capacity range of 3 to 7,4 liters. The data covers 3 configurations.

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

TypeSpecifications
1800 Mk III automatic (1973-1975)
  • Use: Normal
  • Capacity 4,4 liter (Service fill)
  • Capacity 7,4 liter (Total)
  • Code: Borg Warner 3/1
2200 Mk III automatic (1972-1975)
  • Use: Normal
  • Capacity 7,4 liter (Total)
  • Capacity 3 liter (Torque converter)
  • Code: Borg Warner 3/1
1800 Mk II automatic (1968-1972)
  • Use: Normal
  • Capacity 4,4 liter (Service fill)
  • Capacity 7,4 liter (Total)

Additional Notes

  • The Austin 1800/2200 (Balanza), ADO17 automatic transmission is housed in a transaxle unit across all three configurations listed, meaning the gearbox and final drive share a common fluid reservoir rather than operating as separate systems.
  • The 1800 Mk II automatic (1968-1972) carries a service fill capacity of 4.4 liters, which represents the amount of fluid required when draining and refilling during routine maintenance without fully disassembling the unit.
  • The total fluid capacity for the 1800 Mk II automatic reaches 7.4 liters, a figure that accounts for all fluid retained throughout the entire transaxle assembly, including passages and cavities not emptied during a standard drain procedure.
  • The 1800 Mk III automatic (1973-1975) shares identical service fill and total capacity figures with the Mk II, at 4.4 liters and 7.4 liters respectively, indicating no change in fluid volume requirements between those two generations of the 1800 automatic transaxle.
  • The 2200 Mk III automatic (1972-1975) lists a total capacity of 7.4 liters, matching the 1800 variants in overall fluid volume despite the larger engine displacement paired with the transaxle.
  • Unlike the 1800 configurations, the 2200 Mk III automatic specification breaks out a dedicated torque converter capacity of 3 liters, identifying the volume held within the converter itself as a distinct portion of the 7.4-liter total.
  • The absence of a separate service fill figure for the 2200 Mk III automatic, in contrast to the 4.4-liter service fill listed for both 1800 variants, reflects a difference in how the fluid capacity data is structured for that configuration rather than a shared servicing approach across all three rows.
  • All three configurations are rated under normal use conditions, meaning the fluid capacities listed apply to standard operating environments rather than severe-duty or first-change-only scenarios.

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