What effect does low-quality gasoline have on cars?

The influence of low-grade gasoline on cars includes blocking the oil circuit and causing carbon deposition in the engine. Oil blockage: impurities in low-grade gasoline often exceed the standard, which will flood the whole oil supply system during use. Oil pump screen, fuel filter, fuel injector and other parts with holes or filtering functions are easily blocked by these impurities. After the oil supply system is blocked, the most common results are poor oil supply, inability to start, sudden engine shutdown during driving, or serious vibration. Lead to engine carbon deposition: there are many colloidal impurities in low-grade gasoline, some of which can be filtered out through the filter screen in the gasoline pipe, but most of the impurities can not be filtered out, and will be adsorbed in the oil pipe and cylinder at the same time, which is called carbon deposition. Moreover, inferior gasoline has no cleaning effect and will only increase the burden on the automobile engine. If you accidentally add low-grade gasoline, completely drain the remaining oil in the empty fuel tank and re-add high-grade gasoline. At the same time, the throttle, injector and combustion chamber should also be cleaned. Finally, according to the severity, replace the spark plug and ignition coil as required.