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Posts Tagged: Coolant versus water — which cools your engine better?

Water versus coolant in your engine — Which does a better job?

Water versus Coolant: Which is Better for Heat Transfer? It’s true that water is better at transferring heat than coolant. In fact, at engine operating temperatures around 200°F, plain water wins the water versus coolant competition by removing 17% more heat. But there is a lot more to the decision than just heat transfer, and the biggest one is corrosion. Water corrodes; it’s just that simple Cooling systems contain many different metals: steel, aluminum, manganese, and copper. Any time you combine dissimilar metals with an electrolyte solution, you get galvanic … Read More


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