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Originally Posted by A 2 Z
Interesting... how much time do you all recommend before cleaning the filters? I got mine installed last December.
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A good rule of thumb is about every 20k miles or sooner depending on where you live. I usually just clean off any large particles on the filter. K & N recommends every 50k miles-100k miles for re-oiling.
K&N Air Filter Cleaning Instructions
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If you have not experienced a decrease in mileage or engine performance, chances are your filter is fine and does not yet need cleaning. To be more specific, the filter does not require cleaning if you can still see the wire screen on the entire air filter regardless of how dirty it may appear. When the screen is no longer visible some place on the filter, it is time to clean it. When used in normal paved road, street or highway conditions, our replacement air filters that fit in the factory air box should require cleaning every 50,000 miles and our large conical filters on an intake system should require cleaning every 100,000 miles. When used in dusty or off-road environments, our filters will require cleaning more often. We recommend that you visually inspect your filter once every 25,000 miles to determine if the screen is still visible.
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