Haldex service done. Diffs to do

I know nothing about the Haldex, but I think it's to do with 4Mo ... is that an actuator and housing? What's all the black stuff from? How often does it need doing?
 
I know nothing about the Haldex, but I think it's to do with 4Mo ... is that an actuator and housing? What's all the black stuff from? How often does it need doing?
Yes, it's a haldex pump From a 4motion. I don't know what the Black goo is but it's not good. Should be done every 40k I think .
New haldex oil versus old haldex oil.

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Ah it's a pump, thank you. Is the black stuff hard or gooey? How many miles on that one?

I do have a 4Mo but only had 3.5k miles on it so far.
 
Going to get mine done at the next service.

Mine was a company lease van, no idea if it was done by VW in it's first 3 years. Nothing to day it was in the paperwork.

What's the filter and fluids cost you?
 
Microbe growth due to the presence of water.
Perhaps a seal that isn’t doing it’s job, driving through floodwater or getting to close with a pressure washer?
 
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