Quote:
Originally Posted by harrys
I am an owner of F20 116i with 8 speed auto trasnsmition. I have 116.000km with no problems of the gearbox so far. Is there a need for an oil change of the auto transmition? Have you done any?
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https://www.zf.com/global/media/en_z...s/TE-ML_11.pdf
ZF states:
ZF 5-, 6-, 8- and 9-speed as well as the ZF 4HP20 automatic transmissions are filled maintenance-free with specially developed partially synthetic ATF oils. Maintenance-free fills are intended for normal operating conditions. Especially driving at very high operating temperatures can result in accelerated aging or increased wear of ATF oils. It is recommended, in the event of severe operating conditions, such as:
- frequent highway driving in top speed range,
- offensive, sporty driving style,
- frequent trailer operation,
being above average, oil purification (oil change) on automatic transmissions is recommended between 80,000 km and 120,000 km, or 8 years, depending on the load.
There you have it, hope this helped.