Consider a catch tank for the condensation from the Air-Oil Separator.
A significant part will be water which I understand is high in acid.  It
will also allow you to monitor the amount of blow-by between oil
changes.  

I use a small metal can with a fitting in the top and a 1/8" vent hole
for a syringe to suck the residue out.  The syringe makes it easy to
measure the volume and water/oil ratio.  Just one look and you will not
want to pour this stuff back in your engine.

Steve Colwell    L2K