First, do not use antifreeze or add boiling water. Adding coolant after the engine has started can cause important parts to crack or deform due to rapid cooling. Suddenly adding boiling water to the cooling system can also cause the cylinder head and gasket to deteriorate.

Second: Do not delay oil changes and refueling. In winter, failing to change or refuel in time can make it difficult to start the engine, and the engine can suffer severe damage.

Third: Starting from burning motor oil and the bottom of the intake pipe. To prevent fires, do not ignite directly. When a fire occurs in the engine's intake pipe, ash from combustibles and hard fragments are sucked into the cylinder, causing the intake and exhaust valves to close tightly and accelerating cylinder wear.

Fourth: Long-term use of electric glow plugs and flame preheaters. The heating elements of electric glow plugs and flame preheaters are resistive wires, which consume a significant amount of electrical energy and heat, and can be damaged due to sudden discharge over a long period. At the same time, the resistive wire may burn out, and electric glow plugs cannot be used for extended periods.

Fifth: Adding oil directly to the cylinder.

Sixth: Starting to run at high speed immediately. When the engine has just started, the oil temperature is low, its fluidity is poor, and immediately running at high speed can cause various moving parts to wear rapidly due to insufficient lubrication, leading to serious bearing damage.

Seventh: Suddenly stopping the engine at full load. The pressure released during high-speed operation of the engine compresses fresh air into the engine through the turbocharger to completely burn fuel and generate strong output, and suddenly cooling after becoming very hot due to the turbocharger. If turned off, the oil flow will immediately stop, the turbocharger will not cool down in time, and the turbine may be damaged.