TRNW-2: VW O9G mysterious leak

[Steve Everett]

  I have an 09 Jetta with a O9G , originally built at another shop, 2
months after being built it had a small leak from inside the bellhousing,
small enough that sitting running after 5 minutes there will be one drop at
the inspection hole at the bottom of the bellhousing,  when you look up
inside that hole the fluid seems to be seeping from the right side up
inside the bell,  we pulled the unit, and fluid appeared to be coming from
around the uppermost bolt on the right side,  (red dot in picture
attached)  I removed the bellhousing, cleaned everything, resealed the bell
and used silicone on all the bolts,  reinstalled unit and still had the
leak,  pulled again,  this time I thought maybe the case was porous in the
are above and to the left of the bolt, as fluid appeared to be in that
area,  I cleaned everything with brake clean, coated that area with JB
weld, resealed the same bolt again, installed a different converter,,,
installed unit,    same leak again,
       took a week or so for us to find another unit,  removed bellhousing
from core unit, cleaned and resealed everything related to the different
bellhousing,   reinstalled,   still have same leak,

  Different bellhousing, changed attaching bolts the last time around,
using ultra grey silicone to seal everything,  plenty of silicone on all
the bolts, changed converters once, ( fluid is not all over inside of
bellhousing , only on right side, so I don't believe its converter related)

  only explanation would be two different bellhousing being porous in same
area ?    in the picture attached the fluid originates in the area where
the red dot is

 Anyone ever seen something like this ?

   Steve
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