Hey! Great thread idea. I have a few old vehicles that I’m always fighting the earth from reclaiming. I ran across Blaster co, like PB Blaster, Surface shield. It’s much longer lasting than fluid film and other CPC’s, corrosion preventing compound, easily available.
Here is a great CPC torture test that shows the lasting effects.
Best Car Undercoating? Let's find out! Is Flex Seal the Best Rust & Salt Protection? - YouTube