MotorvateDIY: K&N Filter Dirt Test Results

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]....

ramoszx12r

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Tony Ramos

Kzonts

I use the K&N drop-ins and change my oil every 3,500 miles. I don't try to stretch the limits so I'm not too concerned. Besides, doesn't every CAI system use some type of non-paper filter? There are so many cars out there running these non-paper filters, including most FI setups.

However, I wouldn't use a K&N filter on a vehicle operating in dirty/dusty conditions.

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2019 Magnetic Black Roadster
FI Exhaust | EVO-R Rear Diffuser | Artwork Bodyshop Front Splitter | Tuned By Specialty Z

MotorvateDIY

3500 miles???? You might want to get a used oil analysis to see if your oil change interval can be safely extended and save some money.

On my G37, my oil analysis tells me that 7,000 miles of hard use (11 dyno pulls, multiple runs down the drag strip) the oil is still performing as needed. Iron and aluminium is low and the BN is still > 4.

Just something to think about.