Rust dip success stories?

I've not tried molasses, but I have tried vinegar with mixed results. I've also used a few different commercial solutions including Safest Rust Remover and Evapo-Rust. Safest seemed slightly more effective, but Evapo's easily obtained locally. I now use Esprit Performance concentrate. Unlike Safest, Evapo-Rust, and others Esprit doesn't dilute their product with water--that's your job. You control how strong you want the solution. The gallon of Esprit mixed with 9 gallons of water is equal to buying 10 gallons of Evapo in terms of effectiveness, but you can make anywhere from 5 to 20 gallons of solution depending on how strong you want it. The gallon I bought 8 years ago is still about half full.

Rust Depot-Rust Removal-Salt Removal

I'm not affiliated with him at all, but I bought mine direct so I've dealt with Lee. He's not a sales pitch in a sport coat--he was quite pleasant to deal with and a very straight shooter. His contact information's at the bottom of the web page if you've got questions.