Hello, my VW dealer has told me that VW does not give any recommendations to allow the transmission oil to change,because one would have a longlife oil in the transmission…now I know the recommendations of ZF and they propose to allow all 120,000 km to replace the transmission oil. Since I am already used to it with my E-Class anyway regularly allow all 60-80.000 km to change the transmission oil, I will also want to do this with my Phaeton and because ZF is the manufacturer of the transmission from Phaeton “I intend to let ZF in Dortmund do the same because a colleague had it done there on his S 8 hat. Someone here in the forum had his transmission oil changed regularly, or you trust in the recommendations of Volkswagen to trust in the longlife oil.I prefer to change oil every 120,000 km,as at some point with a gearbox damage.So far I have had good experience with all my automatic models,with gear oil changes. e round ask how your experiences are like… Thank you for your info ́s gruss Uwe