How does a catch can affect that one way or the other?
Originally Posted by MrHorspwer
What's the worst that can happen? When it gets really cold, moisture that has condensed in the line freezes, plugging the PCV system, causing excessive crankcase pressure, and blowing a front or rear crank seal. That's about the worst that can happen.
Originally Posted by shimps1
As long as I remember to empty it, is there any way that it can cause damage to the engine?