Seepage or Leak?

[n77nxc]

I was recently under the car doing some exhaust work and noticed a film of oil on the bottom of the oil pan and the bell housing of the transmission.

First off, this is a brand new LQ9 engine with a Holley LS oil pan installed. Its never dripped one drop of oil on the garage floor, and I have roughly 600 miles on the car.

I'm hoping this is an oil pan gasket issue and not something more serious like the rear main, but I wanted to run it past you guys to get some input.

Here are some pics: