The fact is ...
- Rust can form from inside and outside the car body
- Paint itself is a form of rust proofing as it protects the metal from interacting with water and air
- No rust proofing can protect up to 100%, but at least it can slow down the rusting process
- Scratches formed on the body, that expose the bare metal, increase the rusting process significantly
- Living around the beach do increase the rusting process, especially when there is a direct contact with the salt water.
- Some conventional rust proofing brand are proven to cause allergic to certain people