Can Radiator Fluid Replace Coolant?
2 Answers
Radiator fluid cannot replace coolant because it lacks antifreeze properties. Here is relevant information: 1. Radiator Fluid: Radiator fluid is a liquid that helps prevent engine overheating while also providing anti-corrosion, anti-rust, and anti-foaming effects. After using radiator fluid in a vehicle, it offers excellent protection for various internal components such as cast iron parts, brass, copper, aluminum alloys, solder, and rubber parts. Radiator fluid can mix with any antifreeze or cooling water. There is no specific usage cycle for radiator fluid—it can be used year-round to comprehensively protect the radiator and all cooling system components. 2. Coolant: The main ingredients of coolant include calcium chloride, formaldehyde, ethanol, ethylene glycol, and glycerin, among others. It contains a special additive that provides antifreeze protection in winter, anti-boil protection in summer, and prevents scale buildup year-round. Coolant is commonly used in liquid-cooled engine cooling systems.
Actually, 'Shui Xiang Bao' is just a colloquial term for antifreeze coolant. I've been driving for over a decade before learning this. I used to hear experienced drivers mention 'Shui Xiang Bao' all the time, until a mechanic told me it's actually ethylene glycol-based coolant, primarily serving to dissipate heat, prevent freezing and resist corrosion. However, there's quite a difference in coolant formulations on the market nowadays - some long-life types can last five years while regular 'Shui Xiang Bao' might need replacement every 2-3 years. Most importantly, never mix different brands. Last time I conveniently topped up with a different brand, it caused flocculation in the radiator which was a nightmare to clean. I'd recommend choosing a product with freezing point at least 10°C lower than your local record low temperature, and remember to completely drain the old fluid during replacement.
