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Choose Antifreeze Professionally, Protect Your Engine All Year Round — AISO Lubricants Group Selection Guide
Release time:
2026-07-11
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Choose Antifreeze Professionally, Protect Your Engine All Year Round — AISO Lubricants Group Selection Guide
Many car owners and operation and maintenance practitioners have a common misconception: antifreeze is only used for freezing protection in winter, and any low-priced product can meet the needs. In fact, antifreeze is the "blood" of the engine cooling system, undertaking five core functions: antifreezing, anti-boiling, anti-corrosion, anti-rust and anti-scaling, and protecting the engine's working condition all year round. Data shows that more than 70% of engine overheating, waterway corrosion and water tank blockage failures are directly related to improper selection and poor quality of antifreeze. As a professional brand deeply engaged in the lubrication and maintenance field, AISO Lubricants Group brings you a scientific and comprehensive antifreeze selection guide based on years of oil R&D experience, helping you accurately match vehicle models and scenarios, avoid maintenance misunderstandings, and protect the stable operation of the engine for a long time.
I. Abandon Misconceptions: Antifreeze is Not Just for Freezing Protection, Precise Adaptation is Required All Year Round
The core value of antifreeze is not a single freezing protection, but all-weather temperature control and system protection. In winter, it prevents the coolant from freezing and expanding to crack the water tank and waterway pipelines; in summer, it effectively raises the boiling point to avoid high-temperature boiling and engine overheating; all year round, it inhibits the corrosion, rusting and scaling of cast iron, aluminum alloy, copper pipelines and sealing rubber, ensuring the smooth circulation of the cooling system.
Inferior antifreeze is mostly blended with industrial raw materials, which not only fails to meet the standards of antifreezing and anti-boiling performance, but also produces acidic substances that corrode the engine waterway, water pump and radiator. In the short term, it will cause abnormal water temperature and power drop; in the long term, it will lead to serious failures such as pipeline leakage, water pump wear and cylinder block damage, greatly increasing maintenance costs. Therefore, the core of choosing antifreeze is to match the working conditions, select high-quality formulas and recognize genuine products.
II. Core Selection Dimensions, Choose According to Needs Without Mistakes
1. Check Freezing Point and Boiling Point: Adapt to Regional Climate and Reserve Safety Margin
Freezing point is the most basic core indicator of antifreeze, which directly determines the use safety in low-temperature environments. The industry's general golden selection principle: the freezing point of the selected antifreeze should be more than 10℃ lower than the historical lowest temperature in the local area to avoid the freezing risk caused by extreme low-temperature weather.
The winter in southern regions is mild with no extreme cold weather, so antifreeze with a freezing point of -25℃ can meet daily use; for most northern regions, plateau and mountainous areas, it is recommended to choose products with specifications of -35℃ and -40℃; for extremely cold regions in Northeast and Northwest China, it is necessary to upgrade to ultra-low temperature freezing point products of -49℃ to resist severe cold in all aspects.
At the same time, the boiling point performance cannot be ignored. Under high-temperature conditions in summer, long-distance driving and heavy-duty working conditions, ordinary coolant is prone to boiling and failure. High-quality antifreeze can raise the boiling point to more than 108℃, effectively avoiding high-temperature boiling and adapting to all-weather and all-scenario driving needs. AISO long-acting antifreeze can accurately control the freezing point and boiling point according to the dilution ratio through precise formula deployment, taking into account the dual performance of low-temperature antifreezing and high-temperature anti-boiling.
2. Check Formula Technology: Distinguish Categories and Match Engine Materials
Antifreeze on the market is mainly divided into two categories: traditional inorganic salt technology and modern organic acid technology (OAT), which differ greatly in adapted vehicle models, service life and protection effect, and need to be selected accurately according to the engine type:
Traditional inorganic salt antifreeze is affordable, suitable for old cast iron engines, with a short replacement cycle (usually replaced every 2 years or 40,000 kilometers), relatively single protection performance and easy to produce scale.
OAT organic acid technology long-acting antifreeze is the current mainstream high-end formula and also the core technology formula of AISO. This formula does not contain scale-forming components such as silicate and phosphate, and is specifically suitable for the mainstream aluminum alloy engines of modern automobiles. It has excellent protection effect on aluminum cylinder blocks, radiators and water pump seals, and can effectively inhibit electrochemical corrosion and cavitation corrosion. At the same time, its service life is greatly improved, achieving long-acting protection for 5 years, suitable for various equipment such as household passenger cars, commercial vehicles and engineering machinery, which is convenient and efficient.
3. Check Color Specifications: Refuse Blind Mixing and Avoid Compatibility Risks
Colors such as red, green, blue and orange of antifreeze are not just decorations, but marks used by manufacturers to distinguish formula systems and additive types. Antifreeze products with different formulas and colors have different additive components, and blind mixing is strictly prohibited.
Mixing different types of antifreeze will cause chemical reactions of additives, produce flocculent precipitates and colloidal impurities, block waterways and water tanks, destroy the anti-corrosion protection system, and directly cause engine failures. When purchasing, follow the principle of "same formula, same color, same brand" for supplement and replacement. For the first replacement, it is recommended to completely drain the old liquid to avoid the impact of mixing old and new liquids on performance.
4. Check Usage Scenarios: Differentiated Selection for Passenger Cars and Engineering Machinery
Household private cars and lightweight commuter vehicles: Priority is given to AISO OAT long-acting antifreeze, which is suitable for new aluminum alloy engines, with a long replacement cycle, less scale and comprehensive protection. It is suitable for daily commuting and long-distance travel, reducing maintenance frequency and costs.
Heavy-duty equipment such as trucks, buses, engineering machinery and generator sets: They operate under long-term high load and high speed, with high pressure and frequent temperature fluctuations in the cooling system. It is necessary to select professional-grade antifreeze with high boiling point, strong anti-corrosion and aging resistance, which is suitable for long-term continuous operation working conditions, avoiding high-temperature failures and pipeline corrosion.
III. Core Advantages of AISO Antifreeze, Creating Professional Maintenance Quality
Relying on the profound R&D and production accumulation of AISO Lubricants Group, AISO series antifreeze, with strict quality control, advanced formulas and comprehensive protection performance, is different from ordinary inferior products on the market, and has become the first choice for car owners and operation and maintenance teams:
1. Advanced OAT organic acid formula, long-acting and durable: It adopts high-end organic anti-corrosion technology, without silicate, phosphate and borate, not easy to scale and block pipelines, compatible with all materials such as aluminum alloy, cast iron, copper and rubber seals, and provides long-acting stable protection for 5 years, greatly reducing maintenance frequency.
2. Precise temperature zone adaptation, all-year protection: Multiple specifications of freezing points are available, covering the climate of all regions in the country, no freezing at low temperatures and no boiling at high temperatures, effectively stabilizing the engine working temperature, improving combustion efficiency and reducing power loss.
3. Multiple protections, eliminating hidden dangers: It strongly inhibits the formation of rust, corrosion, cavitation and scale, comprehensively protects core components such as water tanks, water pumps, cylinder blocks and waterways, extends the service life of the cooling system and engine, and reduces failure maintenance costs from the source.
4. Strict quality certification, safe and reliable: The products exceed the industry's general standards, have passed strict tests in multiple scenarios and working conditions, are suitable for most mainstream passenger cars, commercial vehicles and industrial equipment, with stable quality and strong compatibility, eliminating maintenance risks caused by inferior products.
IV. Industry Maintenance Tips
1. Antifreeze is not maintenance-free for life. Long-acting products are recommended to be replaced every 5 years or corresponding mileage, and ordinary products are replaced every 2 years. Expired and invalid antifreeze will lose its protection ability.
2. It is forbidden to use tap water or pure water to replace antifreeze for emergency long-term use. Impurities in water are easy to scale and corrode pipelines, causing cooling system failures.
3. Check the antifreeze level regularly. If the level is too low, replenish the same model product in time, and avoid mixing miscellaneous brands and different colors of antifreeze.
4. For the first filling of new cars and new equipment, priority is given to high-quality antifreeze adapted to the original factory to lay a foundation for long-term maintenance.
Conclusion
Although antifreeze seems insignificant, it is the core guarantee for the long-term stable operation of the engine. Choosing the right antifreeze is not an unnecessary maintenance, but the most cost-effective vehicle protection. AISO Lubricants Group has always been deeply engaged in the lubrication and maintenance field of vehicles and equipment with professional technology and strict quality. From formula R&D to finished product testing, it has strict control at every level, providing users with high-quality antifreeze products suitable for all scenarios and all models. Select accurately and maintain scientifically, and use AISO professional oil to protect the engine from stable operation all year round, reduce maintenance costs and extend the service life of equipment.
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