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Message: <blockquote data-quote="tenno" data-source="post: 352358" data-attributes="member: 15290">Where did you did your GB flushing? Did you also change the filter in the GB. How much did you use to top up the GB. Did you use the recommended oil like ZF?</blockquote>I did not flush the GB since most of service workshops dont have hose connector/adaptor to connect the ATF flusher machine. though there have multi choice adaptor but nothing suit. I had look after many workshop including one regularly servicing BMWs. I cant bear to drag my car here and there which will cause more harm to GB. I did change the ATF last DEC where the milage now around 15K. Cant remember how many litres used. 6 litre i thought. Im using TQM st since mech said that ZF is only for tiptronic or stiptronic GB only. At same time the other UDM was filled up with ZF-reason was that car is tiptronic. Need to know more wheater it is true?[/QUOTE]