Vapor and dripping are normal, even with breather attached to end of the hose vs. plumbing back into the intake. I have a new high-perf engine I began to spell "gas" in the cabin...looked all over for a gas leak, until I saw some oil dripping from breather and fumes coming out of it while running. I ended up exiting the hose into the fender well - and no more fumes. Still drips a miminal amount for vapory-oil.
Better option than mucking up the intake and turbo with this stuff.
Hope this helps...
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