Originally Posted by Chan Chee Hoe

K&N Air Filters are very good when new,which is Factory Oiled,the problem start when the Filter get Dirty,most Owner don't know how to do the exact cleaning,some "Over" Oiled,which cause the MAF 'coated' with a thin layer of Oil,some Oiled not complete,the dust went thru these area....it is not a easy Job.....it also need to be completely dry,before putting on the Oil,which needs at least 2 Hours under the Sun[cannot use Compressed Air]....