Prevent the formation of rust

Rust is a red compound, which forms by the action of moisture and oxygen on unprotected metal. It is a process of oxidation in which iron combines with water and oxygen to form rust.

Rust proofing is a process by which iron or steel objects such as cars are treated to prevent the formation of rust. The degradation process cannot be stopped completely unless a rust prevention treatment is applied every year to two depending on current environmental conditions. Rust proof treatments are applied to the metal body-work during manufacture. This remains effective on a car for up to five years, but this does depend on the car design and to the local climate to which the car is exposed.

If you plan to keep your car for five years or more it is worth applying a rust proofing coat despite the fact that many modern cars are being made with longer-lasting galvanized steel. The rust proof fluid will need to be applied using a compressor and spray gun. Rust proofing should be applied under the bonnet, front and back doors, underside and wheel arches.

A second coat can be applied a few days later for complete coverage and to give a thicker waterproof covering. This is particularly advisable for the underside and wheel arches as they are most exposed to water and salt, the main contributors to rust build-up.

Advantages of rust proofing:
• Extends the working life of vehicle
• Reduces costly repair work
• Very effective – up to 4 years depending on environment
• Increases re-sale value
• Does not wash off during cleaning

Source: http://www.dinitrol.co.uk/rust_proofing_treatments.aspx