The old clunker's exhaust was blowing a bit, so I sealed it.
Then it fell off. It had rusted right through between the catalytic converter and the silencer.
"You know what you're going to have to do, don't you?", said Kitewife.
"No, write an Instructable!"
[Some of my more recent projects are now here.]
This is a fairly simple job (it only took me half an hour), but you do need some specialist materials:
You should also wear appropriate clothing - spare a thought for whoever does the laundry in your home, and be aware that you could quite easily get un-removable gloop on your clothes. An old hat might help as well.