Undercoating Recommendation for the Northeast

[Sauce]

I'm looking at getting my new ranger undercoated and have a few shops and products available to me.

Fluid Film
NH Oil
Woolwax

and a little farther away a product called "Corrosion Free."

I'm leaning doing Fluid film this year since it sounds like that product can creep into more crevices and be sprayed into more places and then follow up Woolwax in subsequent years for the thicker protection.

Does anyone have any experience with these products that live in the Northeast?

for what its worth, im also in the northeast and the options available to me are the same ones that you listed. I dont have experience with any of them, but I am going to go with NH oil partially due to researching the product and partially due to confidence with the garage that will apply it. They told me that it is recommended to get recoated every three years, but hes seen vehicles where its lasting up to five years. Application cost was quoted at $650.

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