Have you ever thought of shortening the life of your beloved car by not replacing the three filters in time? Have you ever thought of getting sick with a cold because you don't change the air conditioner filter on time? Have you ever thought about the cost of not replacing the three filters in time? Come, we understand about the maintenance and maintenance of the car to talk about not replacing the three filters in time how hurt. ● petrol filter before I say petrol filter, I want to say something about petrol quality. The Iraqi oil field is very well known, and the crude oil is relatively high quality. Ira crude oil has a detectable wax content of 0.9 percent at -30 degrees Celsius, which means the lower the wax content in gasoline, the higher the wax content, it means there are fewer long carbon chains, and the more long carbon chains there are in gasoline, the less it will burn, and the more carbon will accumulate in the engine. In our country, the wax content of crude oil is about 15% to 20% , that is to say, in China, the domestic environment is worse, a good gasoline filter is very important. Gasoline filter, most people know that its role is to filter impurities in gasoline. Because the modern automobile uses the electronic fuel injection type to supply, the oil pressure is bigger so now the gasoline filter shell uses, wraps, but inside comes the material by the filter paper constitution, the more high-end gasoline filter has the nylon material or the macromolecule material.