How do you fix oil leaking in headers?

To fix oil leaking in headers, first, identify the source of the leak, which could be from the valve cover gaskets, oil return lines, or the turbocharger if equipped. Clean the affected area thoroughly to remove any oil residue, then replace any damaged gaskets or seals. If the leak persists, consider using high-temperature sealants as a temporary fix, or consult a mechanic for more extensive repairs. Regular inspections and maintenance can help prevent future leaks.