If I have this right, your 09 E70 mounts the same six speed ZF auto found in the earlier bimmers [and lots of other makes]. Here is a discussion at one remanufacturer, who says use only the ZF ATF and change at 50k [contra BMW's 'lifetime' story ...]
Common Problems Associated With The ZF 6HP26 Automatic Transmission
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2006 X5 3.0 6-spd w/Evo UUC ssk
sport/premium pkgs
born Valentine's Day, 2006.
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