Quote:
Originally Posted by playswcars
Why are these filters oiled? What benefits does the oil have to a non-oiled filter?
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From BMC website:
Generally speaking, vehicle such as automobiles or motorbikes require total particle filtration efficiency up to a minimum dimension of 10 micron, in order to avoid any risk of foreign bodies passing through large enough to damage the mechanical components downstream the intake system.
OEM air filters are made of paper, and their main function is to protect the engine. These filters feature high resistance to the air flow which, consequently, reduces the pressure and the engine performance. BMC’s air filters allow the passage of a greater air flow. Moreover, compared to traditional paper filters which must be replaced when carrying out maintenance, BMC filters can be re-used so that they last as long as the vehicle itself.
More questions covered in the BMC FAQ here:
https://www.bmcairfilters.com/eng/fr...questions/7/fq