Can different antifreeze be mixed if the Audi's antifreeze level is low?
1 Answers
Different colors of antifreeze cannot be mixed. If the colors of antifreeze are different, their compositions are also different. Mixing antifreeze with different compositions will cause chemical reactions, leading to antifreeze failure and sometimes even solidification. Even if the antifreeze is of the same color, if they are from different brands, the stabilizers may differ, and mixing them can reduce cooling and cleaning effectiveness. Therefore, it is best not to mix them. It is recommended to use antifreeze of the same brand and color. If antifreeze is accidentally mixed, the antifreeze in the radiator must be completely drained, rinsed with pure water, and then refilled. Antifreeze generally comes in colors such as green, blue, pink, and some even have fluorescent effects. Typically, ethylene glycol is green, propylene glycol is blue, and glycerol is pink. The purposes of manufacturers dyeing antifreeze in different colors are as follows: Prevent mixing: To avoid confusion with other liquids and prevent accidental ingestion, many manufacturers add different color formulations for differentiation. Easy identification of leaks: When the engine leaks, the antifreeze's color makes it easy to identify during inspection and repair. Safety considerations: These chemical components in the engine are toxic, so liquids like windshield washer fluid and antifreeze are dyed to prevent accidental ingestion.
