I bought a Honda civic for $550 to use as a commuter and turns out that I have found that there is a small oil leak. The oil pan looks TERRIBLE, it's so dirty with black gunk. I'm not sure where the leak is but my guess is that it needs a new oil pan gasket. Where do you guys think the leak is from? A couple of the pictures were from after I wiped the oil off of the pan in a couple of the pictures.