The ingress of just 1 gram of unfiltered dust into a cylinder reduces the service life of the piston assembly by 5–7%. For turbocharged engines, the consequences are even more severe: abrasive particles accelerate the wear of turbine blades, leading to costly repairs as early as 80,000–100,000 km.
Paper Filter — The Industry Standard
Today, 95% of passenger cars use air filters based on resin-impregnated microfiber. The efficiency of this design is 99.5% for particles sized 5–10 microns. Service life: 15,000–30,000 km depending on operating conditions.
Inertial and oil-bath filters, common in the 1970s and 1980s, are no longer used in modern passenger cars. Their place has been taken by cyclone pre-cleaners on trucks and special equipment.
Critical Factor for Turbo Engines
For forced-induction engines, the filter element itself is less important than the tightness of its connection to the air filter housing. Even a slight suction of unfiltered air after the filter leads to accelerated wear of the turbocharger compressor. When selecting a spare part, pay attention to the quality of the sealing lip.
The STELLOX range of air filters covers more than 2,500 models of passenger and commercial vehicles. All elements are tested for tightness and compliance with original geometric parameters.
Recommendation for Service Shops:
Before installing a new filter, clean the seating surface in the housing of dust and oil deposits — this prevents sealing failure even when using a high-quality part.
