These procedures are followed to ensure a consistent comparison of airflows between filters that are of differing material or manufacture. K&N has developed procedures for measuring airflow and pressure differential (restriction) of the various size and shaped filter elements that we manufacture. The SF-1020 is a computerized flow bench capable of measuring airflow rates up to 1020 cubic feet per minute (cfm) at test pressures of up to 65 inches of water.
K&N Engineering performs all its airflow testing on a SuperFlow Corporation SF-1020 flow bench. Yet, K&N uses much more scientific methods of proving that K&N replacement air filters outperform their disposable equivalents. No degree in engineering is required to observe how much easier cotton breathes compared to paper. K&N lists the factory prescribed amount of K&N air filter oil for each K&N air filter on under the product specifications Repeat the same test, only, instead of using a sheet of paper, try it again with a cotton t-shirt. You will immediately notice how much effort is required to breathe through this piece of notebook paper. Hold a piece of notebook paper against your mouth and try taking a deep breath. Even at home there is a very low-tech and simple way to demonstrate the advantage of K&N cotton air filters versus paper air filters. Cotton naturally breathes easier than paper which in turn increases airflow, reduces intake tract restriction, and can help your car run better. This is why K&N’s traditional high-flow air filters are designed with 4-6 layers of cotton gauze media pleated between a wire screen mesh. K&N air filter oil has been developed to remain suspended within the thousands of microscopic cottonĪ typical disposable automotive air filter uses a paper filtration media efficient at trapping dust, yet they are also a significant source of airflow restriction.
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Ask The Experts at K&N How To Use K&N Air Filter Oil – How Much Oil Do I use?
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