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Automotive manufacturers are equally concerned about cost savings for new vehicles produced and after-sales maintenance cost of the vehicles.

A solution applied is to use the same parts (systems) on a wide range of models (vehicles) produced. The air filtration system is such an example. The Renault engines of H4BT 408, 1000cm3 and K9K 658 use the same air filtration system.

The question is whether the maintenance on the system should be different or the same system can be applied.

In the paper, new and used origin air filters were tested according to ISO 5011, at the maximum airflow of the engine. During the tests, the restriction of each filter to the different test regimes was measured. The tests were carried out on a laboratory stand. The results were used to determine whether the maintenance schedule applied to the filters leads to premature replacement or the air filters are replaced when they have reached full utilization capacity.