What will happen if the car keeps not changing the oil

If the car does not change the oil for a long time, the following situations may occur:
Increased engine noise: The decrease in oil viscosity can lead to insufficient lubrication inside the engine, exacerbating the wear of internal components and increasing engine noise.
Fuel consumption increases: Due to insufficient lubrication, the combustion efficiency of fuel inside the engine decreases, resulting in an increase in fuel consumption.
Power decrease: The internal friction of the engine increases, leading to a decrease in power output.
Intensified wear of parts: The decrease in oil viscosity will reduce the lubrication effect between internal parts of the engine, leading to increased wear of parts.
Filter blockage: Impurities and oil stains can accumulate in the oil filter when used for a long time, ultimately leading to clogging of the oil filter.
Piston ring jamming: If not used or replaced with oil for a long time, impurities such as sludge and metal particles can easily accumulate in the piston ring area, which may lead to piston ring jamming.
Engine tile burning: Due to poor lubrication, crankshaft bearings and connecting rod bearings may burn out due to a lack of sufficient lubricating oil, resulting in engine tile burning accidents.
Deterioration of emissions: The decrease in oil viscosity can also lead to a decrease in the efficiency of emission treatment equipment such as three-way catalytic converters, resulting in a deterioration of exhaust emissions.
In short, not changing the oil for a long time can have a serious impact on the performance, efficiency, and lifespan of the car, and may even lead to serious mechanical failures and safety issues. Therefore, it is recommended to replace the oil in a timely manner according to the manufacturer's recommended cycle.
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