Can I use Stirling Silver instead and get the same rust protection?
No. You can use Stirling Silver on bare steel and get good protection, but it isn’t comparable to POR-15 Rust Preventive Paint, which penetrates into the pores of the metal and chemically bonds with the surface. Use Stirling Silver as a topcoat over POR-15 to get the best possible rust protection. I’ve put Stirling Silver on bare steel and have gotten a terrific bond. It sure looks as good as a POR-15 coating on bare metal or steel. Isn’t it just possible you’re only trying to sell me another can of paint? Absolutely not! Side-by-side panels were tested under a variety of conditions, and the POR-15 coating was shown to be clearly superior in preventing oxidation and corrosion. Try it yourself and you’ll see. Though Stirling Silver will easily out-perform other coatings on bare steel, it’s greatest value and best use is as a topcoat over POR-15 Rust Preventive Paint. How does Stirling Silver work over other painted surfaces? Very, very well. There are many jobs when you want corrosion p