I don’t understand why your comment did so badly, I found it interesting.
Does it cost much? I live next to the ocean and had just accepted that rust was part of my life now.
I mean a gallon can is $90 plus shipping. It's not too bad.
Absolutely! I just bought some of this stuff and plan on applying it to the to under body of the car itself also.
Used oil apparently also makes good undercoating.
I have environmental and health concerns about used motor oil. Cosmoline is specifically formulated for rust prevention and forms a waxy coating, and doesn't have the additives and pollutants motor oil does after being in an engine.