Went out to the shop Thursday morning and discovered a wet spot under the rear end. Now what the hell is going on? I've put a total of maybe 100 km on the car so far.
Turned out to be a leaking side seal on the diff. This will never do. Ripped the whole dang rear end apart and while I was at it did more "detailing". Decide the red diff and drive axles just don't fit the vibe so..
Here is the seal. Totally ripped up. No idea why. The other side is perfect. Easy enough to change.
And removed all the grime from the back end. Down to the white paint. Not a hint of any prior undercoating, every seam is exposed.
I suppose this all should be undercoated, but not until the next owner sees this rustless wonderland.