DiscoRover007 I have almost the exact same scenario going on with mine. I swapped my driveshaft about 4 months ago and I developed an ominous vibration from 70-75. I thought it was the shaft but I have a VERY wet t-case that's definitely gear oil.

I am very nervous about all this. haha

 

I've got that vibration too. The oil is definitely from the transfer case but I'll have to look closer to see if it's coming from either output shaft. If anything, it'd be the front in order to get the oil to where it's at.

Strange thing about the vibration - while trying to diagnose it I pulled the front driveshaft, locked the CDL, went for a drive and still had the vibe. I'd think if the front output shaft seal and bearing were bad I wouldn't feel the vibe, no?

 

so to be clear... I was referring to the output shaft seal from the transmission not the T/c. And if it leaks it will cover your T/c in all the ways that are shown in the pictures. I had this problem... I know. While I certainly hope that all of your leaks are the T/c I am just saying that you might want to consider this as a reality as well.

 

i hate to say this, but i took the shaft out,


no vibration.

 

I thought all D2s looked like those pics underneith?


That definitely looks like fresh gear oil though. Your crossbar looks very wet. So I would definitely try to pin point and get it fixed.