1. Oil Filter 

Changing oil is one of the routine maintenance for car. In general,we should replace the oil filter at the same time when we change the oil. The function for oil in engine is to lubricate,cool-down,rust and so on. As oil contains too much impurities, then we need to filter the oil by oil filter.

The main function for oil filter is to filter impurities in the oil. Most of the oil filter is used the paper element filter. When the oil filter at work after a certain mileage, the impurities can clog the filter paper,and resulting in less effective filter. 

Of course, if we just replace the oil filter, not replacing the oul, it also will effect the engine’s work, too.

2. Air filter

The main function of air filter is to filter the impurities that enter into the engine and protect the internal engine parts to work properly. So replacing the air filter is very importantduring the maintenance period.

Under normal circumstances, the replacement cycle of air filteris 10000-15000 km. 

Air filter will lose efficacy and affect the performance of the engine if you didn’t  replace it timely once beyond the mileage. In addition, if you didn’t replace the air filter during the maintenance period, the filter effect will become worse and the engine is easy to produce carbon deposition, resultingin power down. Fuel consumption and the cost will increase in the long term.

3. Fuel Filter

Fuel filter effect is very obvious，especially in the harsh environment of current domestic carandimpurities that present in gasoline.
Fuel filter, which is used to filter impurities in the gasoline. Now the car generally adopt EFI fuel supply and work pressure is more higher, sothe filter adopt the metal housing and filter elements use paper, sometimes, the fuel filter also use nylon and polymer materials as elements .

In general, the owner can feel it directly if automotive filtershavn’t maintain during the maintenance period. Please pay more attention to replace the filter timely, in order to avoid irreparable damage to the engine and have more losses.