Take a look at the FSM, and you will see the bell housing containing the CSC is separate from the transmission fluid housing.
My guess is the "special" clutch fluid is Nissan's GT-R clutch fluid.
And yup, it is a ticking time bomb. I replaced mine before it failed. With aftermarket solution. So I don't ever have to screw with it again like some of the guys on here that have replaced it 3 times or more
