I have surface rust on my frame. I have flakes inside the frame that I’m going to try and get out and then coat with Anti-Rust. I have one hole about 2″ square that I just found.
Some day I’d like to take the frame off the car and have it dipped and coated.
How much metal can I lose before the frame can’t be used? Should I stop now? Sell the car? Or maybe remove the undercoating and try to have it coated now before the eventual (distant future) frame off?
How do I know if this is good money going down the drain?