What can be used to clean slight score marks on engine parts?

Using crocus cloth soaked in oil is the preferred method for cleaning slight score marks on engine parts because it provides a soft yet effective abrasive that is less likely to cause further damage to delicate surfaces. The oil adds lubrication, which helps to reduce friction and further wear on the parts during the cleaning process. Crocus cloth, a type of very fine abrasive cloth, can gently remove burrs or minor imperfections without scratching the surface excessively.

Other methods, such as using steel wool soaked in solvent, could create additional scratches or residue that might harm the engine components. Fine sandpaper, even if dry, can be too abrasive for the delicate finishes found on many engine parts, potentially deepening the score marks instead of cleaning them. Compressed air is not suitable for this task as it does not effectively remove score marks and might not address any debris trapped in those imperfections. Using crocus cloth soaked in oil strikes the right balance between cleaning effectiveness and surface protection.