HOW TO FLUSH A RADIATOR
Most people don't ever think to clean their car radiator, but if it's not properly maintained, debris and mineral buildup can accumulate and reduce the functionality of your vehicle's cooling system. This could result in engine damage.
A radiator is an important part of your car engine's cooling system, allowing water or coolant to circulate through small tubes that are cooled by incoming air. Radiator fluid, also known as coolant or antifreeze, helps to dissipate the excessive heat generated by the engine, to prevent overheating and engine failure. This liquid cycles around the hot engine, cooling off the metal parts by moving the heat into the radiator to be cooled before circulating again.
Like most fluids running through engine components, radiator fluid tends to build up unwanted contaminants over time. Eventually, this can lead to radiator corrosion, rust, and scale. A coolant flush helps with reducing this problem, but simply draining the radiator could leave some coolant and contaminants behind. This could then mix with and pollute your new antifreeze and cause overheating. Instead, a full flush is recommended, forcing the removal of all contaminants and debris before adding new fluid.
Your choice of cleaning product is important, to avoid damaging your radiator and potentially your engine. Avoid using vinegar, because the acetic acid makes metal susceptible to rust. Additionally, bleach or products containing it, should never be used, because sodium hypochlorite (bleach) will corrode metals such as steel and aluminum, damaging the vehicle's intake manifold, block, or engine head as well as degrading rubberized gaskets and seals.
Simple Green Pro HD is non-corrosive, safer for cleaning aluminum, stainless steel, and other metals. The professional-grade, engine-safe formula breaks down tough grease, oil, grime, and other automotive fluids.
Directions For How to Flush a Radiator:
Check your vehicle Owner's Manual before cleaning the radiator. Most 4-cylinder vehicles have a capacity of around one gallon. Make sure the radiator is cool to the touch before opening the radiator cap.
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