What is the correct way to use antifreeze?

[McNadia]

Correct methods for using antifreeze are as follows: 1. Clean the engine's cooling system before adding antifreeze; 2. Regularly inspect the antifreeze during use. Antifreeze typically has a service life of about 2 years. When adding, ensure the antifreeze is within its validity period and check its color and consistency. Replace immediately if signs of deterioration, odor change, or cloudiness are observed; 3. Most antifreeze products should not be diluted with water as it may cause sedimentation, severely impairing the antifreeze's functionality. It's advisable to use the same brand of antifreeze; 4. Never directly pour concentrated antifreeze. Direct addition not only fails to meet freezing point requirements but may also cause antifreeze deterioration, increased viscosity, and elevated engine temperatures. Always dilute concentrated antifreeze according to specifications.