What if the car repair screw can't be removed?

1. Draw a deep point along a cross with a saw blade, then hold it down with a flat screwdriver, then clamp the flat part of the screwdriver with a wrench, and tap it gently behind the screwdriver with a hammer. Turn the wrench in the loosening direction at the same time.

2. Spray a little loosening agent on the screw, and then tighten it later.

3. If the oil fume is greasy, it is suggested to burn off the oil stain with fire first, which is easier to remove.