BMW 6 series Convertible, F12 (USA)
Transfer case fluid capacity & service interval
BMW 6 series Convertible, F12 (USA) requires transfer case fluid with a capacity range of 0,44 to 0,62 liters. The data covers 5 configurations.
The configuration chart below lists fill volumes and service intervals for each engine and trim variant.
| Type | Specifications |
|---|---|
| 640i xDrive Convertible (2015-2018) |
|
| 650i xDrive Convertible (2015-2018) |
|
| 640i xDrive Convertible (2013-2015) |
|
| 650i xDrive Convertible (2012-2015) |
|
| 650i xDrive Convertible (2011-2012) |
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Additional Notes
- The BMW 6 Series Convertible F12 (USA) transfer case carries a dry fill capacity of 0.62 liter across all listed xDrive configurations. A dry fill figure represents the total fluid volume required when filling a completely drained or newly assembled unit, making it the larger of the two capacity values specified.
- The service fill capacity across all listed configurations is 0.44 liter, which is the volume used during a routine fluid exchange rather than a full overhaul. The 0.18-liter difference between dry and service fill reflects residual fluid that remains in the transfer case during a standard drain procedure.
- Both the 640i xDrive Convertible and the 650i xDrive Convertible share identical transfer case capacities of 0.62 liter dry fill and 0.44 liter service fill, indicating no variation in transfer case fluid volume between the six-cylinder and eight-cylinder engine configurations.
- All transfer case fluid specifications across the listed configurations are designated for normal use conditions, meaning no separate severe-use interval or capacity figure is specified for any of the xDrive variants covered.
- The 640i xDrive Convertible appears in two separate model year groupings, 2013-2015 and 2015-2018, both carrying the same 0.62-liter dry fill and 0.44-liter service fill values, indicating no change in transfer case fluid capacity across those production periods.
- The 650i xDrive Convertible spans three distinct year groupings: 2011-2012, 2012-2015, and 2015-2018. All three share the same transfer case capacities, reflecting consistent transfer case specifications throughout the model's production run as listed.