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Re: POR-15 On Aluminium ??
If I am not mistaken, Por-15 is a rust inhibitor, with the active ingredient of phosphoric acid. It would be a bad idea to put any type of acid on aluminum, as it will react and cause serious pitting.
For oxidized aluminum, a good polish (sanding for really heavy oxidation) would be ideal. It can be followed with paint, fresh anodizing, powder coat, or heavy coat of carnauba wax to prevent further damage.
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