Is it necessary to change antifreeze in winter in northern regions?

[RiverDella]

It is necessary to change antifreeze in winter in northern regions. The functions of automotive antifreeze: Automotive antifreeze provides anti-corrosion protection for cooling system components; prevents scale formation to avoid reducing the heat dissipation effect of the radiator; ensures the engine operates within the normal temperature range. Precautions for using antifreeze: The antifreeze level needs to be checked regularly, and replenished promptly if it falls below the minimum level; observe whether the antifreeze has turbid sediments, and replace it in time if there are turbid substances; different vehicle models have different antifreeze colors, so they cannot be mixed; before winter, measure the freezing point of the antifreeze to prevent it from freezing.

[VonPaislee]

Should I change the antifreeze in winter in northern regions? Having driven for twenty years in Northeast China where temperatures drop to -20 or -30°C, I can say that antifreeze loses its effectiveness as it ages. Old fluid may contain impurities, raising the freezing point—once it freezes, it can burst the radiator or engine block, and repairs cost far more than a fluid change. I recommend regular replacements, ideally every two years or testing the freezing point annually before winter. Testers are affordable online (just几十块) and easy to use. Opt for high-quality brands like long-life antifreeze, ensure the correct mixing ratio (pure water freezes faster), and always check the seal cap and fluid level—leaks or low levels accelerate issues. Safety first: don’t risk damaging your car to save small money.

[AshleyRose]

As a young car enthusiast, whether to change the antifreeze in winter up north depends on the situation. The factory fluid in a new car might last three years, but for older cars or those frequently driven long distances, the freezing point can easily exceed limits, risking freezing at just -10°C. I've used a portable tester—draw some fluid, add a reagent, and if the color darkens, it's time to change. Not changing it risks not just freezing but also reduced cooling efficiency, affecting engine lifespan. On maintenance timing, combine it with oil and tire checks. Buying genuine fluid and topping it up yourself saves money and peace of mind. When driving in icy conditions, stability is everything.

[VonRichard]

In short, antifreeze in the north needs to be replaced in winter. I use a tester to measure the freezing point—if it's lower than the local minimum temperature, the old fluid must be replaced. Poor-quality antifreeze has a shorter freeze resistance time, and excessive impurities can clog the system. You can do it yourself—just pour in the new mixed fluid without exceeding the fill line. Regular maintenance can avoid major repairs.