Yesterday replaced the fuel filter, never fun. Buttoned up the trans and refilled it as well as the transfer case. It shifted better but still a bit edgy in DS. So, today hooked it up to ISTA and reset the TC and initiated the relearn on the transmission. Wow, shifts butter smooth in D and DS. Very happy I got around to this.

I do agree with the many that recommend a 60k interval for this. The liquid that comes out is thin and looks dark-ish.
On to engine mounts next. :-)

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2003 4.4i black ext./black int./black headliner (kid's runabout)
2014 535d X-drive, M package, silver/black interior

Sold but not forgotten:
2009 E70 35d, black ext./black int./black headliner (sold 2021)
2006 4.8iS Le Mans blue/cream int./black headliner, SOLD in 2012 sadly...

Other hardware:
2015 Cayenne S (wife's new DD and definitely wroooommmmm)
2016 Tundra 1794 edition crew cab, luxo hauler
2005 Tundra crew cab, weekend hauler. Sold after 150k very happy miles.