After some more research I need to verify my findings but I will be recommending re-working the non-seal seam as well as that seam leaked like a sieve before redone in both mine and wife's car.

I used an o-ring on wife's and Teflon tape on mine. I will be examining my Teflon seal after about five months and report back the findings. If as I expect the INERT Teflon is just as I put it in I will update my repair posts to reflect that (of course they will be revised to the FIXED method should the Teflon be an epic fail)

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2011 E70 • N55 (me)
2012 E70 • N63 (wife)