Re: Oxidized Decals on RV
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Decals would be in the "your results may vary" category. They may be beyond any resurrection.
The logical approach would be to try a vinyl dressing such as our Protectant; but you may need our Back-to-Black, which is like a vinyl dressing on steroids.
With any product in a situation like this, experiment first in an inconspicuous area and see how the finish reacts initially as well as over a day or two.
The surface should be clean and cool.
Apply with a soft applicator and massage gently into the surface. Let it penetrate for a few minutes and buff gently with a soft terry towel and let it dry overnight and see how it looks.