Cooling System Electrolysis

What is Electrolysis?

In simple terms, electrolysis in a radiator or heater is the localized degradation of the metal caused by excess electrical current flowing through lines in search of an electrical ground. But what happens when there is no ground to be found or an ungrounded electrical device in the vehicle creates excess electrical current? Electrical current can be introduced into the cooling system in many ways, but some common causes are a loss of ground due to mechanical damage or corrosion, or a frayed wire in contact with the radiator. Any vehicle with accessories using the radiator support as a ground is begging for electrolysis.