Inside Line: ZF

Preventive maintenance advice from ZF Services UK, for ZF automatic transmissions in the BMW 5 Series

The semi-synthetic oils developed for use in ZF 5-, 6- and 8-speed transmissions are maintenance-free under normal operating conditions, described as ‘lifetime fill’ by some vehicle manufacturers. However, some degradation of the oil inevitably occurs with time and mileage, which may result in noise, judder, or a deterioration in gear change quality. This can be avoided by carrying out a transmission oil and filter change after 50,000 to 75,000 miles.

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