Preventing rust

[Matt69olds]

i just bought a bed for my truck. The bed came from a Arkansas truck, other than the typical minor working mans “battle damage” dents and severe weather beaten paint, it’s very solid and rust free. Since I live in the dreaded “tin worm” habitat, what’s the best way to protect the bed? The days of using the truck as a work vehicle are past, but it will still be used as a truck. I’m thinking through cleaning, blowing out all the dirt and crud from internal concealed areas, and lots of 3M internal corrosion spray. It comes in a aerosol can, and is a kinda oily gooey goop. Opinions?

 

[Frankenchevy]

The 3m undercoat stuff will actually dry, unlike some of the cheaper stuff. It seems pretty durable.

As for it’s efficacy for rust prevention, I’m not sure. I only have a few hundred miles since finishing my truck and where I live DOT can’t use salt or deicers, only sand is allowed.