What would be the best option for a frame coating? Is POR 15

POR-15 - ACE - Automotive Colour & Equipment

Rust on frame. Please help.

Paint in layers, sand a whole lot, or use a paint that fills well? : r/BeginnerWoodWorking

Not really related but freaking out and not sure where to ask - spilled coffee on my moms wooden table and it left a stain. Any chances of saving it / returning

POR-15® Rust Preventive Coating

Best way to rust-proof this for the Canadian Winter? Heard about POR-15 and fluid film but not sure which one is best? : r/Wrangler

How -to The Basics of Frame Restoration, Pt. 2 - AutoRestorer

Refinishing A Dana 44 Axle With POR-15 Rust Preventative Coating - Southeast 4x4 Trails

Can I use paint thinner to remove this old badge residue on my single stage paint or would it remove the paint? If not have any suggestions? : r/Autobody

Painted roof last year, now rust is showing through. : r/diynz