K&N Air filter questions

[b_hickman11]

Originally Posted by bronsin

The stock air filter is really an excellent design. Its 99% efficient at removing dirt compared to the KN's 95%. My last one cost $13. Thats $40 for 90k miles of superior protection. At 90k miles Im buying a new car. I just dont see the cost/benefit being in the KNs favor. Maybe if I lived in Alaska on a dirt road and serviced the AF every 5k miles.

So you think you are still getting 99% at 90,000 miles? My guess is that it would be 50% or lower. By then I could have already cleaned my K&N(several times) and still have it 95% or more.

[supmet]

Originally Posted by b_hickman11

So you think you are still getting 99% at 90,000 miles? My guess is that it would be 50% or lower. By then I could have already cleaned my K&N(several times) and still have it 95% or more.

50% would be high I think, and I have my doubts a paper filter would last 90,000 without just falling apart. Mine was filthy to the point you couldn't clean it without destroying it at 15k. If by some miracle it lasts 90,000 miles, there's no way it is going to last 18 years that its supposedly going to take to get to 90,000. I would bet a paper filter sitting in your garage wouldn't work after 18 years just from humidity in the air.