Excavators are among the most commonly used machinery in engineering and construction projects. Engine antifreeze should not be overlooked, as it plays a crucial role in maintaining the longevity of the excavator's engine. Just as humans have a heart, so does an excavator. Some may wonder: where is the heart of an excavator? The engine is its heart—if the engine fails, the machine becomes immobile, much like a person in a vegetative state. So, how often is it advisable to replace the antifreeze?

Antifreeze primarily functions to dissipate excess heat from the engine cooling system. During summer, when temperatures are high, it effectively prevents boiling and avoids overheating. At the same time, it prevents the coolant in the pipelines from freezing and expanding in winter, which could cause the radiator to crack or damage the engine cylinder block. Therefore, to ensure the engine starts and operates normally, we must inspect and replace the antifreeze regularly throughout the year.

Under normal working conditions, the service life of antifreeze is typically around two years. Beyond this period, its performance will gradually decline. If an excavator remains idle for an extended time, the antifreeze may also deteriorate. Hence, it is essential to regularly monitor its condition.