Fuel filter - the guardian of the car's "blood"

Why can this small part extend the life of the engine?

The fuel filter is often likened to the "kidney" of the car. Although it is small in size, it is the core defense line of the fuel system. Its core task is to filter impurities (such as dust, rust, and moisture) before the fuel enters the engine to ensure fuel cleanliness and avoid damage to precision fuel injectors and combustion chambers.

How it works

When the fuel flows from the fuel tank to the engine, it passes through the filter's multiple layers of filter material (such as cellulose, synthetic fiber, or metal mesh). Particles smaller than 10 microns will be intercepted, while water may be discharged through the separation device. Modern high-pressure fuel injection systems require higher oil cleanliness, and the filter element accuracy must even reach less than 5 microns.

The cost of ignoring it

Power reduction: Blockage leads to insufficient fuel supply and weak acceleration.

Difficult starting: Impurities block the fuel injector, and it is easy to stall during cold start.

Maintenance cost surge: Long-term non-replacement may damage the fuel pump, and the maintenance cost is as high as thousands of yuan.

Recommendation: Replace every 20,000-40,000 kilometers or according to the manual. Areas with poor oil quality need to shorten the cycle.