I was looking through my old coils today and found my 5" X 7" Detech coil. The black cord wrap had become stiff and cracked, and the material was flaking off the coil wires. Does anyone know of a product that will keep coil cords supple and flexible, and perhaps preserve the rubber/plastic cord wrap? I called Detech and they do not replace coil cords (out of warranty), so I'm stuck with it. The coil is probably 20 years old, having bought it originally for my Explorers. Other coils seem to be ok, but I'd like to keep them going as long as possible.