Can I Mix My Own Car Antifreeze?
2 Answers
Car antifreeze can be mixed by yourself. However, before adding antifreeze, it is essential to thoroughly clean the engine cooling system. Here are some additional details: 1. Antifreeze contains descaling and cleaning agents. If the engine cooling system is not properly cleaned before use, the existing scale in the system may detach upon contact with the antifreeze, causing the antifreeze to become cloudy. In severe cases, this can lead to clogged water pipes. 2. When adding antifreeze, pay attention to the MAX and MIN level marks on the antifreeze reservoir. If the fluid level is below the MIN mark when the engine is cold, add more antifreeze. The amount added should be within the range marked by the MAX and MIN lines on the reservoir.
I recommend against mixing your own car antifreeze. Having worked in auto repair, I've seen many car owners try to save money by carelessly mixing ethylene glycol with water, only to get the ratios wrong. This led to engine block cracks from freezing in winter, resulting in complete engine failure and repair costs exceeding ten thousand yuan. Antifreeze isn't just about freeze protection - its additive package prevents corrosion and oxidation. Home conditions can't properly test pH levels, and unstable homemade mixtures accelerate radiator rust or cause excessive foaming that impairs cooling. Pre-mixed antifreeze from legitimate manufacturers is quite affordable anyway, with bottles costing just tens of yuan that last 2-3 years - much safer and more convenient. If you insist on DIY, you'd need specialized tools to test freezing points, creating unnecessary hassle. You're better off purchasing branded products from shops and following the manual's replacement schedule.
