BMW 6 series, E24 (USA)

Automatic transmission fluid capacity & service interval

BMW 6 series, E24 (USA) automatic transmission fluid capacity ranges from 2 to 7,3 liters. Service intervals include normal and flexible (on board maintenance system) options. The data covers 3 configurations.

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

TypeSpecifications
635 CSi (1987-1989)
  • Use: Flexible (on board maintenance system)
  • Capacity 3 liter (Service fill)
  • Code: ZF 4HP22/EH 4/1
633 CSi (1979-1984)
  • Use: Normal
  • Capacity 2-2,4 liter (Change capacity)
  • Capacity 6,9-7,3 liter (Dry fill)
  • Code: ZF 3HP22 3/1
630 CSi (1976-1979)
  • Use: Normal
  • Capacity 2-2,4 liter (Change capacity)
  • Capacity 6,9-7,3 liter (Dry fill)
  • Code: ZF 3HP22 3/1

Additional Notes

  • The BMW 6 Series E24 (USA) automatic transmission fluid specifications cover three distinct model variants across the 1976-1989 production span, with capacity figures differing notably between earlier and later configurations.
  • The 630 CSi (1976-1979) and 633 CSi (1979-1984) share identical fluid capacity figures, with a change capacity of 2-2.4 liters and a dry fill capacity of 6.9-7.3 liters under normal use conditions.
  • The dry fill capacity of 6.9-7.3 liters on the 630 CSi and 633 CSi represents the total fluid volume required when filling a completely drained or rebuilt transmission, as opposed to a routine fluid exchange.
  • The change capacity of 2-2.4 liters on the 630 CSi and 633 CSi is substantially lower than the dry fill figure, reflecting the volume of fluid that can be practically drained and replaced during a standard service without a full transmission overhaul.
  • The 635 CSi (1987-1989) carries a service fill capacity of 3 liters, which is a higher service fill figure compared to the 2-2.4 liter change capacity listed for the earlier variants.
  • The 635 CSi service interval is governed by a flexible schedule tied to the on-board maintenance system, meaning fluid service timing is determined by the vehicle's own monitoring rather than a fixed mileage or time interval.
  • The earlier 630 CSi and 633 CSi specifications are listed under normal use conditions, which represents standard operating circumstances without the variable-interval logic applied to the 635 CSi.

Other Systems