S/C concerns?

[newthings]

Tone
I am about to change the nose drive to the newer model from Alpine and add the small pulley. (Mine was the first unit to ship after Dragon Bob's) My rattle has been loud for some time.
The question is--What sealer do I use on the bolt flange of the new unit?

Also, I had to leave the oil level down 1/4" below the fill hole to stop consistant leaking around the bolts. With that done, no further leaks or fluid loss at 10k miles. When at Alpine we could not add the full 160 ml of oil - we tried. My early gear case might hold less, but 'filling till it spills', just made for leaks. I dip a small clear hose, mounted on a syringe, 1/4" into the case and pull back on the plunger to verify the level.

Thanks, Roy