I'm experiencing an oil leak on my 1998 Legacy Outback. At first I thought it was a fuel leak at the filler neck, like the others I've seen posted, but upon smelling it, and actually finding the leak, I realized that was not the case. The leaking area is pictured (low-res, cell phone camera). It is leaking along that rusted area. Does anybody have any idea of what that could be? I'm relatively new to cars in general. Would it be a fix I could do at home? Shop gave me an estimate of $500 to fix it, and I'd prefer to do it myself if possible. I can keep it running, leak or no, just would like to fix it and not worry about it.