Quote:
Originally Posted by 78F350
I haven't done it, but I have a pair of seals picked up on Rock Auto clearance sale in my parts bin for when needed.
The oil is a 75w90 gear lube. Look for the SAF AG4 spec.
*There is no drain plug for the differential.
From the ZF Tiptronic transmission parts manual, Porsche may have slight differences:

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78... I'm not under the car... so...
Couldn't you just remove the fill plug and suck out the fluid (without removing all those housing bolts)? Please, tell me someone overlooked that method... and went the hard-way.
I'm not under the car, so I can't see why/why not.
Thanks!