When a heater core, radiator, or other cooling system component fails through corrosion from the inside, there’s a good chance that electrolysis corrosion is to blame. Today’s systems with their abundance of aluminum parts and coolant formulas that haven’t changed in decades can sometimes clash. Most engine coolants (“anti-freeze”) in use today include corrosion inhibitors to prevent electrolysis corrosion from happening. This doesn’t mean it won’t.
Changing the coolant in your engine and radiator regularly is important as it replaces those worn down electrolysis inhibitors. Proper maintenance of electrical components on the engine, especially ground wiring and connections, is equally important.
Read about it at 10w40.com.
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