I have used POR15 and its great!
The under boxes on my Airstream Motorhome (the only thin steel parts on the MH!) and back of chrome bumpers on my P5 just to name a couple.
In the 10 years or so of using POR15 it has never peeled or rust reappeared.
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Chuck
Nth. Dorset. UK
Membership #1896
Don't take life so seriously.... it is not permanent!
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