What are some good auto rust-proofing options?

Auto rust-proofing options include the electronic module, drip-less oil spraying and undercoating. Electronic rust-proofing is the most effective method because it prevents corrosion on all car body parts.

Electronic auto rust-proofing involves installing an electronic module in the car. The module feeds the metal with a weak electric current that prevents the electrochemical rusting process.

Drip-less oil sprays are wax-like sprays applied to the entire vehicle body. Small holes are drilled where necessary to ensure the spray spreads evenly.

Undercoating involves spraying a tar-based substance on the exposed under body parts of the car. The substance hardens to shield the car from salt and moisture, thus preventing corrosion.