If there is a small amount of oil on the surface, thread locking adhesives and sealants can be used without the need for surface treatment.
To achieve sufficient bonding effect, thick films of lubricating grease and contaminants should be removed.
For construction adhesives and fast-dissolving adhesives, it is necessary to conduct tests to determine the acceptability of the processed surface.
Generally speaking, end-users should apply the processed surface with the lowest level of complexity.