Wolseley 18/85, Six, ADO17

Automatic transmission fluid capacity & service interval

Wolseley 18/85, Six, ADO17 automatic transmission fluid capacity ranges from 3 to 7,4 liters. The data covers 2 configurations.

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

TypeSpecifications
Six automatic (1972-1975)
  • Use: Normal
  • Capacity 7,4 liter (Total)
  • Capacity 3 liter (Torque converter)
  • Code: Borg Warner 3/1
18/85 automatic (1967-1972)
  • Use: Normal
  • Capacity 4,4 liter (Service fill)
  • Capacity 7,4 liter (Total)

Additional Notes

  • The Wolseley 18/85 automatic transaxle carries a service fill capacity of 4.4 liters, meaning a routine fluid change without full disassembly replaces only a portion of the total fluid volume held in the system.
  • The total fluid capacity of the 18/85 automatic transaxle reaches 7.4 liters, a figure that applies when the unit is fully drained during an overhaul or complete rebuild procedure.
  • The gap between the 4.4-liter service fill and the 7.4-liter total capacity in the 18/85 automatic reflects fluid retained in the torque converter and internal passages during a standard drain, which is typical behavior for automatic transaxle designs of the era.
  • The Wolseley Six automatic, covering 1972-1975, shares the same 7.4-liter total capacity as the earlier 18/85 unit, indicating a comparable overall fluid volume for the transaxle assembly at full overhaul.
  • A dedicated torque converter capacity of 3 liters is specified separately for the Six automatic, identifying the converter as a distinct fluid reservoir within the transaxle system rather than a figure absorbed into a general total.
  • Both the 18/85 and Six automatic configurations are noted as transaxle arrangements, meaning the transmission and final drive share a common fluid sump rather than operating as separate units with independent fluid requirements.
  • All capacity figures across both configurations are listed under normal use conditions, with no separate severe-duty interval or capacity distinction present in the specifications.

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