What are the precautions for using automotive antifreeze?
3 Answers
Precautions for using antifreeze: 1. Do not mix different types of antifreeze: Different types of antifreeze have different freezing points due to their varying compositions. Therefore, antifreeze should be selected based on the temperature conditions of the vehicle's operating environment. Generally, the freezing point of the antifreeze should be 10~15°C lower than the local minimum temperature to prevent the antifreeze from losing its antifreeze function. 2. Do not dilute with water: Avoid diluting antifreeze with tap water. Antifreeze mixed with tap water will not only have an increased freezing point but will also gradually produce sediment due to the impurities in tap water, ultimately affecting the cooling system's performance. 3. Do not directly add concentrated antifreeze: The concentration of ethylene glycol in antifreeze is not necessarily better when higher. Directly adding high-purity concentrated antifreeze not only fails to meet the engine cooling system's requirements for antifreeze but may also lead to unexpected issues such as antifreeze deterioration, increased low-temperature viscosity, and engine overheating. Therefore, when using concentrated antifreeze, it must be mixed according to the specified requirements, and direct use is prohibited. 4. Regularly check the antifreeze level: The antifreeze level in the engine compartment's reservoir should be checked every quarter. The normal level should be between the MAX and MIN marks. If it is below the MIN mark, the same brand and model of antifreeze should be replenished promptly.
I've been thinking about car antifreeze for a long time. After driving old cars for over a decade, I'm most afraid of antifreeze issues. First, simply check the fluid reservoir's level marks weekly, and top up with the same type of new fluid when low. Don't casually mix in tap water or different brands, as mixing can easily cause corrosion to engine components. Second, regular replacement is key. It's generally recommended to change it every two to three years or every 40,000 to 50,000 kilometers, because aged antifreeze loses its protective effectiveness, making the engine prone to overheating in summer heat and potentially freezing in winter cold. When replacing, ensure the system is completely purged of air, as residual air can reduce cooling system efficiency. Additionally, concentration is important. I often use a simple tool to measure the antifreeze ratio, keeping it between 50%-70% for optimal antifreeze performance. Finally, always seal the cap when storing, as antifreeze is toxic and should be kept away from children. Dispose of old fluid at designated sites. These small steps can ensure engine longevity, saving money and providing peace of mind.
As a DIY car enthusiast, don't overlook coolant details. First check your vehicle manual for type - ethylene glycol-based is most common, but never mix with silicate types to avoid chemical reactions damaging radiators. I use a refractometer to check concentration, aiming for 50% antifreeze and 50% water; too low risks freezing, too high reduces cooling efficiency. Replacement intervals vary: every 2 years in harsh winters, 3-4 years in warmer climates. Proper system bleeding is crucial - removing airlocks prevents overheating and pressure bursts. Only top up with identical specifications, and store/dispose of used coolant properly to avoid environmental fines. Regular maintenance pays off: monitor levels, and replace immediately if fluid appears cloudy or has sediment. Neglecting this can lead to costly engine repairs - definitely worth the extra attention.
