How many colors of antifreeze are there?

[VanKing]

There are 4 colors of antifreeze, namely red, blue, green, and yellow. Different colors cannot be mixed casually, and it is even more important not to mix them with other maintenance fluids such as windshield washer fluid. The full name of antifreeze is antifreeze coolant, and its function is to prevent the coolant from freezing and cracking the radiator or damaging the engine cylinder block or head when the car is parked in cold winter. The method of adding antifreeze is: 1. Unscrew the radiator cap, open the radiator drain valve, and drain the antifreeze; 2. Insert a rubber hose connected to the tap water pipe into the radiator filler port; 3. Turn on the tap water faucet to allow tap water to continuously flow through the engine cooling system; 4. During the flushing operation, keep the engine idling until clean water comes out of the radiator; 5. Add antifreeze to the radiator.