Dongfeng Tianlong will knock on the cylinder when it is short of oil. Insufficient oil will make the engine not get enough lubrication when working, and then it is easy to produce sounds such as valve ringing and cylinder knocking. It is best not to continue driving because of insufficient oil. You can find a nearby repair shop or gas station to add the corresponding engine oil, and remember not to mix other engine oils, otherwise the performance of the engine oil will change, such as lubrication performance, cooling and heat dissipation ability, etc. , it is impossible to better protect the engine.

Function of engine oil

Lubrication, engine oil produces a continuous oil film among all friction surfaces of fitness and sports parts, reducing the friction between parts. Refrigeration, the oil passes through the working surface of parts in the circulation system, which can reduce the temperature of parts. Cleaning, the oil can take away the metal chips produced by the friction surface and clean the carbon deposits accumulated in the cylinder, piston and piston ring.

Shock absorption and buffering: when the working pressure of the cylinder port of the automobile engine rises greatly, the loads on the piston, piston plate, crankshaft and rolling bearing of the engine crankshaft suddenly increase, and are lubricated by the rolling bearing, so that the impact load is relieved. ? Anti-rust treatment, engine oil can avoid corrosion of parts.