Very early. like 1000 or 2000 miles. I took the can apart today and while it is catching alot of oil, much is still getting through to the intake manifold. The coalescing media was soaked in oil, the hose to the IM had oil residue in it, and the front of the IM under the hose fitting was coated with oil. The "Clean side" pcv was dry.
I wish I knew why i was sucking in so much more oil than most. Every few hundred miles I get a couple ounces of oil in the can, and that's just what is being caught. I Seafoamed it today and threw the RotoFab intake back on.
F this car.