Rust is a serious concern for a car, and can in some instances result in major damage to the car's frame. But is it possible ...

Restore Rust Converter changes rusty surfaces into a protective long-lasting coating. ... You can brush, roll, or spray on Restore. A gallon will cover up to 500 square feet.

As a general rule, rust converters are best to use on objects and materials that you will consider painting later on, since they convert the rust into a permeable surface that’s intended for paint.