If you're poor and have an exhaust leak, this stuff is a lifesaver (HVAC duct tape)
I recently dropped my entire exhaust
And patched up a couple holes with it, as well as tightening my exhaust clamps, which are still sagging. Go over bump = creaking noise as exhaust contacts underbody. Ugh. Hoping to re-route to a side exhaust this weekend.
Here's where I covered where the O2 sensor used to be. Bye-bye Service Engine Soon light!
The whole mess installed under the car, complete with beat-up undercarriage and an old Chevy in the background I desperately want to liberate from its neglecting owner (has only been run once in the past several years).