Can Antifreeze Be Mixed for Use?

[GarrettLynn]

Automotive antifreeze should not be mixed, as doing so can lead to excessively high water temperatures. This is because different antifreeze products have varying freezing points, electrical consumption rates, and levels of corrosiveness. Mixing them might have the opposite effect. Currently, most antifreeze products on the market are ethylene glycol-based. Therefore, even products from the same manufacturer should not be mixed if they are not ethylene glycol-based. Below is some relevant information: Although called antifreeze, its primary functions are actually corrosion prevention and scale inhibition. Consequently, the compositions of antifreeze from different manufacturers vary, typically containing five or more additives. Since different manufacturers use different additives, incompatibility is likely to occur, meaning chemical reactions might take place. Therefore, it is best to avoid mixing antifreeze products.