Dear guys,I would like to take this opportunity to thank you for all the great support that you guys have shown.I had went to a workshop which is they repair a lot of BMW. they told me that all of BMW automatic transmission gearbox need to do maintanance (change gear oil, gear box gasket and filter) every reach 20k km. just wanna get some opinion from you guys is that true ? appreciatedPlease do not hesitate to contact me at +60123042082 if I can be there of any help or you need further information.Mean time take good care there. Hope to catch and see you soon. Thank you.Best regards,Eddie Chan