Checking the underbody protection of the car (Renault 19)

1. Wash the bottom thoroughly.

2. Illuminate the bottom with a bright lamp and see if there are any damaged areas.

3. Clean the damaged areas with a spatula or wire brush down to the metal.

4. Clean the metal from traces of rust.

5. Treat the cleaned areas with an anti-rust agent.

6. Treat flat surfaces with a brush.

7. Use a spray bottle to treat hard-to-reach areas.

(You can find the original at this link: renaultbook.ru)