When applied correctly, LFD usually has a positive effect on insulation life and long-term reliability. By removing deep moisture from thick paper layers, it reduces hydrolytic aging and restores mechanical strength margin, which directly slows further degradation. Internal, well-controlled heating avoids large thermal gradients, so additional thermal damage is minimal. The key is proper temperature control: if overheating is avoided, LFD effectively extends remaining life by stabilizing moisture and preventing accelerated aging mechanisms, rather than shortening it.