BMW 3.0 CS, E9 (USA)
Automatic transmission fluid capacity & service interval
BMW 3.0 CS, E9 (USA) models require automatic transmission fluid with a capacity range of 1,8 to 6,25 liters. The data covers 1 configuration.
The configuration chart below lists fill volumes and service intervals for each engine and trim variant.
| Type | Specifications |
|---|---|
| 3.0 CS (1971-1975) |
|
Additional Notes
- The BMW 3.0 CS, E9 (USA) automatic transmission carries an initial fill capacity of 6.25 liters, a figure that reflects the total fluid volume required when the transmission is dry, such as after a complete overhaul or unit replacement.
- The service fill capacity is rated at 1.8 liters, representing the smaller volume exchanged during a routine fluid service, where residual fluid remains in the torque converter and passages after a drain.
- The gap between the 6.25-liter initial fill and the 1.8-liter service fill is substantial, indicating that a significant portion of the automatic transmission fluid is retained within the torque converter during a standard drain, which is typical of automatic transmissions serviced without a full flush or disassembly.
- The single use condition listed for the 3.0 CS automatic transmission is normal, and both the 6.25-liter initial fill and 1.8-liter service fill values apply under that condition across the 1971-1975 model years.
- No variation in capacity figures appears across the 1971-1975 production span of the 3.0 CS automatic transmission, as a single set of specifications covers the entire range without differentiation by model year.