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  "filter" means air filter, oil filter fuel filter. "Filter" in the automobile engine filtration of air, oil and gas plays a role, so as to protect the motor, but also enhances the efficiency of the engine.

first, air filter

a lot of dust suspended in the air, primarily composed of silicon dioxide, which is a substance harder than metal, install air filter can reduce the cylinder, piston and piston ring wear and tear parts. Cars without installing it, cylinder wear will increase 7 times, piston wear will increase 3 times, piston ring wear will increase 8 times. Modern car engines are carburetor (or EFI engine intake control device) shut with air filter.

most automotive engines use a light weight, low cost, easy to replace, high filtration efficiency paper filter for dry-type air filter, usually every 5000 km and clean them. Clean, we should take out the filter element gently end and blow with compressed air from the inside outward to remove dust from your core, do not use gasoline or water washes. Air filter must be replaced every 25000 km.

Second, the oil filter

internal combustion engine in use, dust, metal chips, mechanical impurities such as carbon clear will continue to mix with oil and exhaust and combustion air for the oxidation of oil, will also make the oil gradually to produce pectin, mechanical impurities and colloidal mixture will form clay, this will not only accelerate the wear of moving parts and produce oil plug. To ensure that the cleaning of oil, oil filter installed in the engine lubrication system.

most car engines use a spin-on oil filter, this filter is not washable disposable filters, when you change the oil must also replace the oil filter, otherwise it will affect the quality of lubricants. Oil change and oil filter cycle is 5000 km.

third, the fuel filter

gasoline in storage and filling process, it will mix with some impurities and moisture-free, these impurities with the fuel in the oil supply system and cylinder, the cylinder will accelerate wear. In front of the gasoline into the gas pump, you must filter to guarantee gasoline supply system work properly.

currently most of the engine mounted is a one-time non-washable-paper filter fuel filter, replacement cycle is generally 10,000 km. Arrow marks filter the oil inlet and outlet, replace not installed backwards.