BMW X3 Service & Repair Manual > Approved hydraulic fluids: E24, e28, e32, e34, and e38
E24, E28 produced prior to 9/87
Pentosin CHF 4548 was used for initial factory filling.
For filling up and replacement the following oil is to be used:
Pentosin CHF 7.1 BMW Part No. 81 22 1 468 879
Pentosin CHF 4548 and CHF 7.1 can be mixed in these cars.
For complete system oil replacement:
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