When I traded a couple weeks ago for my '01 Limited, I mentioned an exhaust leak sound, about half way down the length of the vehicle. The dealer put it on the lift and showed me a hole in the muffler. The hole looks like what a nail punch would do, and is located on the forward facing face close to the bottom seam. They said it's a "weep hole" to let moisture out.

Double barrel shotguns have weep holes for this purpose, and I refinish them as a hobby.

I looked at him and decided to let it go and not question him, but while perhaps plausible, I don't buy it.

What's the story in your opinion and am I ok to patch up the hole until I replace the muffler?