Has anyone used the K&N air filter on there Diesel pusher, have read positive and negative on these air filters. Supply houses want almost the same price for stock replacement as K&N wants for a clean able filter...

Both my sons are mechanics. One put the KN units on his gassers. no differences, except for higher costs. The other son says snake oils??? You may stick with regular stick unnits and change them more often, rememeber regular maintaintence is better than trusting longer miles.my 2 p.chuck

I had one on my C-12 (came with the coach) and promptly removed it when the Cat dealer showed me the difference in filtration effectiveness between a Donaldson and the K&N.Yes, the flow a bit more air but at the expense of allowing much more dirt through. Not a good trade in my opinion.

I've run a K&N air filter on my motorcycle for the past 10 years....same filter....just clean it and recharge it. A little higher up front to purchase, but when you consider that a single recharge kit for $10 will last several seasons (unless you are driving in really dusty conditions) and the filter flows air much better than most disposable ones, then you win in the long run. Worth it in my opinion....

Had one on a 07' Tundra and never saw a difference. Then I saw a couple of articles saying KN was snake oil and KN never did any scientific evidence to prove otherwise. They just keep selling, what's that tell you?

Well, There's only been about a zillion tests on K&N and, of all the dyno tests and actual tests I've read and seen, not one ever produced any additional HP or, fuel mileage to speak of. In the real world, the human factor can have way too many variables to be able to establish any form of true results. But, in labs, where there's controlled environments, dynamometers test things in EXACT SAME conditions, from test to test to test. And, the big name auto mags have done quite a few run-ups on those and the only real difference is the fact that you can re-use one. Now, if you feel that the cleaning (which can take quite a bit of effort) and the re-oiling (which is an added cost) is worth your effort, then by all means, enjoy. But, the stock filters, usually specked out under pretty close tolerances by the engine manufacturers, are pretty tough to beat and, you just use them, and throw them away for new ones. Scott

K&N Air Filter | Good Sam Community

guidry
Explorer
Apr 13, 2015
Had one on a 07' Tundra and never saw a difference. Then I saw a couple of articles saying KN was snake oil and KN never did any scientific evidence to prove otherwise. They just keep selling, what's that tell you?
10forty2
Explorer
Apr 13, 2015
I've run a K&N air filter on my motorcycle for the past 10 years....same filter....just clean it and recharge it. A little higher up front to purchase, but when you consider that a single recharge kit for $10 will last several seasons (unless you are driving in really dusty conditions) and the filter flows air much better than most disposable ones, then you win in the long run. Worth it in my opinion....
bluwtr49
Explorer II
Apr 13, 2015
I had one on my C-12 (came with the coach) and promptly removed it when the Cat dealer showed me the difference in filtration effectiveness between a Donaldson and the K&N.

Yes, the flow a bit more air but at the expense of allowing much more dirt through. Not a good trade in my opinion.
janechucknicode
Explorer
Apr 13, 2015
Both my sons are mechanics. One put the KN units on his gassers. no differences, except for higher costs. The other son says snake oils??? You may stick with regular stick unnits and change them more often, rememeber regular maintaintence is better than trusting longer miles.
my 2 p.
chuck

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