Its normal in wet conditions. The lines are so long that literally everything condenses and runs to the can.
I pulled my intake manifold to tighten my valve covers and there wasn't a drop or hint of any oil/water residue in the manifold.
I drop mine every time I track the car or every 500-1000 miles. I put it in Gatorade bottles and leave it on peoples desk around here. Always gets a funny reaction when they smell it.
Wilwood 6 Pistons -Magnaflow X-Cat back - CDC Havoc Styling - TSW Wheels - Roadwire Custom Green Leather Interior - Hotchkis Race Suspension - Whiteline Flatout - KW V3 Suspension - 3M Wraps - Toyo Tires - IPF Supercharger - Vortech V3 - Airaid Filters