How Often Should Shell Helix Ultra Synthetic Oil Be Changed?

[JohnRose]

Generally speaking, when driving in most cities across China, Shell fully synthetic oil can be changed every 10,000-12,000 kilometers or once a year. If driving frequently in urban areas with constant stop-and-go traffic, maintenance should be performed within approximately 8,000 kilometers. However, these are just reference figures, and the actual situation should be taken into consideration. Not changing oil damages the engine: If oil is not changed for a long time, once it deteriorates and its performance declines, the lubrication properties of the bearings and the lubrication and cooling functions of mechanical transmission components will be lost, thereby damaging the engine. Reduces engine lifespan: During use, oil minimizes friction between gears and cleans small debris generated by friction. At the same time, oil in contact with air will also undergo oxidation. If oil is not changed for a long time, its lubrication effectiveness will decrease, and small debris inside the engine cannot be flushed out with the oil discharge. This can lead to scoring on the friction surfaces inside the engine, affecting its power output and significantly reducing its service life.