Honestly nam (and void), after getting this in hand i'm not too worried about any leaking issue. This is a very different rubber than used on the other problem figures. It almost feels like vinyl. I'm gonna go out on a limb and say the few instances of oil like substance presented in this thread are not a rotting/break down scenario and i would recommend ordering it with full confidence to a friend.
Just had to throw that out there...
I'll +1 that with 200% confidence that this is rare fluke occasion, sad as it is for rorywan. :/
M.