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- #21
The “Black Wax” option from the second link you provided interests me. It does say it is breathable, I was looking into the website of the product itself and it seems comparable ? to an RP-32 type product. Any thoughts on this? I also don’t want to apply a tar based product to trap stuff in but it doesn’t seem like this does that.@diesel22
For $500, there are there are commercial rustproofers in Michigan - here's one semi-close to you: Undercoating Rust Prevention – LEVEL Upfitters of Grand Rapids - https://levelupfitters.com/undercoating-rust-prevention/
Here's another one that uses Woolwax: Undercoating Rust Proofing (On Sale $100 Off) - SprayTech Coatings in Grand Rapids - https://spraytechcoatings.org/rust-proofing-undercoating-near-me/
It might make sense to have it professionally done, and then YOU (every time you get under your truck) look for areas that need touch-up and shoot them with Fluid Film, Woolwax, etc. Depends on how you want to spend your money and how much you trust these people to put enough on. Under no circumstances, should anyone apply a fully drying 'tar' type undercoating or sound deadener. It is literally worse than nothing at all, as it peels back and ultimately traps water/salt/sand and promotes rust-out.

Black Wax Coating
Shop Undercoating in a Can "Original" Black Wax coating in aerosol spray cans up to bulk 54 gallon drums. Proven rust protection for cars, trucks, trailers, RVs, and other equipment.
