I got mine done at 242,000km by ZF themselves, oil, filter and gasket.. I'll tell you now... they were so hesitant to tell me that the oil has never been changed. They said it was so black and used up.. it was good that I came in for a change. They said to come back in a-few month to do another oil, filter and gasket change because some old fluid is still stuck in the torque converter, which I plan on doing in Jan 2016.

Its so smooth now, I cant imagine another transmission fluid change
Its smooth and responsive!