Carter excavators enter the break-in period after new purchase or overhaul, which is a critical stage that is essential for the long-term stable operation and extended service life of the equipment. During the break-in period, the oil plays a particularly important role, not only lubricating the components, but also carrying away metal chips and other impurities generated during initial operation. In response to the question of "how long to change the oil during the run-in period of the Carter excavator", it is usually recommended that the first time to change the engine oil is about 50 to 70 hours of operation, but this is not a fixed standard, and the specific needs to refer to the official maintenance manual provided by Caterpillar and the actual working conditions to decide. During the run-in period, you should pay close attention to the status of the excavator oil, including the change of color, viscosity and whether there are abnormal particles, etc., to ensure timely replacement and avoid damage to the engine. At the same time, choosing a high-quality engine oil that meets the specifications of the Carter excavator is also an important factor to ensure the smooth run-in period. In general, the oil replacement time of the Carter excavator during the run-in period needs to be flexibly controlled, and regular inspection and maintenance should be carried out in combination with the equipment instruction manual, manufacturer's suggestions and the actual situation to ensure the best performance of the excavator and prolong the service life.