Small oil leak near drain plug

[Eddy]

I'm assuming this opening should be here and this is not damaged? Perhaps a gasket that needs to be replaced?

[sixsix]

Wow - interesting Color set up there right now.

[SportsBoy]

That hole has a twin toward the driver's side a bit, right? Those usually have rubber stopper thingers in them.

If you're getting an oil leak there, you may have a leak in your oil pan gasket on the back of the pan, or (probably more likely) a rear main seal leak. If it's actually transmission fluid, then of course you'd have a leak in the front of your tranny instead.

[Eddy]

Its in the middle, between the two rubber stoppers you're referring to. I was looking around on a silverado forum with a similar complaint and most seemed to say replacing the rear main seal or oil pan gasket fixed the issue.

The van didn't leak before, but has sat more recently - anyone think one of the pour in 'BlueDevil Products Rear Main Sealer' would be worth giving a shot? From what I see actually replacing the seal is quite a bit of work.

Used a black light to make it easier to show in the pictures, but its just oil - took about 2-3 hours for that drip to form with 1-2 additional drip on the ground, so its not severe leak or anything.