BMW here in China wanted to change my gearbox oil at 50.000km which I declined because ZF's own papers states that it is "life time". However, I occationally track my car and have it tuned so I will change it @ 75.000km as a compromise.
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M135i 8AT PWG, MHD, Pure Stage2, WMI via Torqbyte CM5-LT, Custom tuned by PureBoost
(A Dane in China)
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