Maintenance is an effective means to restore the performance of heavy trucks and extend their service life. However, in the actual operation process, some use and maintenance personnel have many wrong practices, affecting the normal use of heavy trucks.

•          Insufficient amount of engine oil or excessively high oil level, resulting in high oil temperature.

Solution: To ensure the amount of engine oil for engine operation, the oil level should be between the upper and lower scale lines of the oil scale, and it should not be too high or too low.