By the way guys I found videos of air filters on Youtube, they tested the filtration capabilities of K&N, BMG, WIX, Purolator and etc... and the myths of K&N, BMG and other washable filters have been finally debunked. Here are the testing videos about O.E. vs. washable performance filters.

The tests shows that bigger micron flour, sand and iron dusts can pass through more on the washable performance filters with the oil applied on them than standard O.E. type filters. What more for the smaller sized particles like fine particles from electric powerplants, factories, cement dusts, brake dusts and etc... it will wear the engine faster than its normal life.

1st video by Project Farm
Which Car Air Filter is Best? Let's find out! Fram, K&N, Wix, Purolator, & AC Delco showdown - YouTube

2nd video by bhvrdr
Do performance air filters like BMC, K&N, Sprint let more sand and dust than OEM and is it worth it? - YouTube