Your first option is to have it oiled with a rust proofing spray. Most agree that this is the best way to do it, since the oil based liquid can creep into every crack and crease for optimum protection. A thicker sealant spray can also be used, but be sure to completely clean the undercarriage before applying it.
What can I put under rust on my car?
You can help keep things free of corrosion by adding your own light covering of oil or undercoating, which will cling to the metal and repel water. Of course, if you really have spare time on your hands, you could get under your car and paint every bit of iron you see.
What causes a car to rust underneath?
Rust happens when a material that contains iron is exposed to moisture. When the two substances come into contact with each other, it causes an atomic reaction that results in oxidation. The most obvious way for moisture to come into contact with the metal in your car is rain.
How much does it cost to fix rust on a car frame?
Fixing a rusted truck frame can be a costly process. Depending on the vehicles make and model, expenses can range from $2,000 to $3,000, and sometimes even more. The primary driver behind these high costs is the labor, as repairing a rusty frame can be incredibly time-consuming.