For those who need to treat rusty metal. Love Project farm.

[BeepBeepRR]

Was watching this video and its very informative. He never accepts free items from companies and purchases the products on his own then does a pretty through test method.

 

[Budnicks]

POR-15 is the only one I've used
seems like it was a good choice, PITA to apply
I used in under the sail panel on my old Silver RR

 

[1STMP]

POR-15 w/ DP-30 on top. No rust after 26 years.