4ksq center differential fill plug?

["Craig Parkin" <cparkin@telusplanet.net>]

Hi All,

I'd like to check the center differential oil level in my '87 4K quattro
(leaky) but I'm not sure where the fill plug is. I can feel but not see
a 17mm plug right on top but can't believe Audi would make it *that*
difficult. I can't even get a wrench or a socket up there! Maybe the
center diff and manual transmission are connected somehow, and the diff
gets filled when you fill the transmission? Any tips or hints would be
appreciated.

Thanks,
Craig Parkin
'87 4ksq