I have done some research on the need for the change of Transmission Fluid for my 2008 MB E320 BlueTec with 120K miles. The one and only time the fluid was changed was at 50K miles by the MB dealer. It is virtually impossible to do the change for a shadetree mechanic like me although I have the use of a lift. Apparently drain plug is absent and so is the filler tube making this a "dealer only" job. From some other BlueTec and E350 friends I hear that since it is a "Sealed Transmission" (nothing in and nothing out?) there is no need to change the fluid. I would appreciate hearing from other MBWorld members about their vision and opinion on this subject.

 

I had 2014BT 7g, changing tranny fluid was part of 80K service. I did it twice at 50 and 95k.
Whats in you schedule book?

 

2014 has 7G PLUS, when 2008 has just 7G. Different filters and different service.
Both have oil pan drain plugs and converter plugs as well.
I had 7G with 180 k miles and records show only single service, so I did it again. When you can't judge oil by its look, I felt better. Car didn't show any difference.