I noticed a puddle under my car one day so I tried to track down the issue. I am assuming it is brake fluid since it is a yellowish color. I got under the car and it seems that it is leaking from the metal lines right beside the cat. The lines are obviously going to the rear brakes, as they are protected by some type of black shield. But it seems to be leaking right where the shield is open and you can see the lines...Does anyone have any idea why it would be leaking right there??