During the use of a vehicle, inferior fuel can cause various damages, mainly including the following seven types of problematic fuels: Petrol with substandard octane ratings may cause engine knocking and power reduction; fuel with excessive sulfur content can corrode fuel system components and shorten the lifespan of the catalytic converter; petrol contaminated with water may lead to fuel pump corrosion and incomplete combustion; petrol containing excessive gum tends to form carbon deposits that clog fuel injectors; fuel with excessive impurities can wear out high-pressure fuel pumps and injectors; expired petrol may undergo oxidation and phase separation, resulting in abnormal combustion; and illegally blended fuel mixtures could trigger unpredictable chemical reactions. These inferior fuels not only immediately manifest symptoms like hard starting, rough idling, and power loss, but prolonged use may also lead to severe consequences such as engine overhaul. If fuel quality issues are suspected, reduce vehicle usage immediately, perform prompt fuel system cleaning, and consider using certified fuel additives as a temporary solution when necessary.
