I can actually see where the oil's leaking from, I think a friend of mine called it the oil cooler line. It's a metal line that has a rubber-like sheath around it and runs into the radiator. Might just be an o-ring or something...
The tint is 5% on the back and 35% on the front.. that's the darkest we can have it here in Texas. I've seen darker riding around but I don't see how they can pass inspection.