How to help your car avoid rust
Cars used for a long time will lead to many parts being oxidized and rusted, so measures need to be taken to help the car avoid or limit rust.
Oxidation leading to rust is a common problem with every old car, but it happens sooner or later depending on the owner's habits and care. When rusted, the car deteriorates quickly. Not only that, the rusted frame will make the car look very bad and greatly affect the appearance.
In fact, rust can appear on any old car. It comes sooner or later depending on many factors such as: "age", quality of materials, driving style, climate, terrain and especially the care of the owner.
The following actions will help to limit this.
Car wash and dry care
Experts say that dirt and especially moisture containing high salt content in coastal areas can cause the car to rust quickly. Therefore, regularly or periodically washing the car with clean water, then drying the corners using a specialized car cleaning cloth combined with a dry air gun is an effective way to protect the car.
Washing your car after every long trip also helps prevent dirt from sticking to the paint surface, which is the leading cause of oxidation. Therefore, before storing your car, you should wash it and dry it thoroughly.
Exterior Polishing
Exterior polishing not only makes the car's exterior shiny but also helps to add a layer of chemicals to the paint, thereby preventing rust and keeping the car's paint color like new. You should polish periodically about 4 months/time to keep the car new, limiting rust.
Park your car in a cool, dry place.
Rust can come from the accumulation of moisture in the outside environment, so it is important to park your car in a dry place, away from rain and high humidity.
A high, covered garage with surrounding walls is the ideal place to store your car. If you don’t have such a place, you can invest in a tarpaulin to best protect your car from oxidizing agents.

Use anti-rust spray
If you don't have a specialized wax on your car, another way is to use anti-rust sprays, in which the sprays commonly used for industrial machinery are also a great way to protect your car.
This type of spray also has a small and long nozzle that can reach into the corners of the car.
Anti-rust undercoating
The way to help prevent car rust is to cover the chassis with a layer of paint or rubber to protect it from rust and reduce noise when traveling on the road. Because the chassis is often exposed to dirty water and mud.
Specialized car undercoating has the ability to prevent oxidation, rust, limit scratches, paint cracks, and protect the car from natural corrosive agents.
Clean immediately after rain
Rainwater contains many impurities and may contain acids. This is the cause of corrosion of the paint layer on the metal surface of cars, leading to rust. Therefore, you should wash your car immediately after driving in the rain or at least spray it with clean water to wash away the rainwater remaining on the car body.
Repair and promptly detect rust and peeling paint
After each wash, keep an eye out for any paint chips or rust or scratches that may be appearing under the car or on the body. Check the condition of drain holes, gaskets, and rubber seals. If water collects here, rust can start to form that is hard to see.

Dehumidify car storage space
Many car owners have the habit of parking their cars in the yard or under the porch for convenience. On days with high humidity, combined with heavy rain, the car is easily damp and moldy. Over time, they can corrode and rust the details under the chassis and in the car compartment.
The solution to help prevent the above phenomenon is to park the car indoors (with a separate parking room) or clean the car interior with a specialized interior cleaning solution combined with deodorizing the car with a deodorizing machine or dehumidifier to help reduce the risk of mold and rust./.