How to Deal with Rust Under the Car?

[DiMaggie]

Use a high-pressure water gun to rinse the chassis, apply an engine exterior cleaner to remove dirt on the chassis, and sand off the original rust-proof layer with specialized sandpaper. Use an air gun to blow out water from the gaps and wipe dry with a towel. Before applying the rust-proof coating, cover the tires and exhaust pipe surroundings with masking paper and tape. Spray the chassis rust-proof material onto the chassis in layers, applying at least 3 coats with a thickness of about 3 millimeters. Remove the surrounding coverings, clean the non-sprayed areas with a specialized cleaner, and allow them to air dry.