Quote:
Originally Posted by evesadam
A couple of my friends swear by K & N, and won't run anything but.
I did a quick search, and the improvements in mileage and/or performance seem negligible.
Are there any real, noticeable differences in the quality of air filters? Mine get so dirty after about a year I want to change them, even though the interval is supposed to be 30000.
If I go with a basic model like fram, will that be an issue?
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In order to answer this question it's necessary to define the reason an air cleaner is used in the first place. Yes, we all know that we don't want hunks of dirt, birds or other junk inside our engines. What we really don't want is micro fine dirt down in the micron size particles that will sandpaper the inside of our engines to nothing in short order. That is where an air cleaner can either shine or just take up space.
K&N cotton filter can ,when cleaned and oiled, hold grit down to mini-micron size where a regular air filter just keeps out the large chunks. K&N filters , properly cared for, will also grab the grit while not upsetting the air fuel mix with air restrictions like a paper filter will in short order due to dust.
The sad truth is people think that all an air filter does is filter air but it's the way it filters the air that is most important of all if you have any hope of a correct fuel air mix or a clean engine inside. The air filter is second only to your oil for long engine life but most owners ignore it completely.
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