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Discussion Starter #1
How often (miles) should I clean my K&N air filter? I live and ride in southern AZ where it is dry and dusty but, I do not off road.
Thanks
 
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Nice Heavy!!!

I live in Ohio and mine was pretty filthy at 8,000 miles, 3,000 of which was a trip to Maine that included some "offroad" conditions.

I'd say every other oil change if you live in a dusty condition.

Make sure to grease the seal too...it helps.

BTD
 

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Tap out the big stuff reoil from the inside and keep riding, unless riding in severe dust I never clean a K&N. I did however clean one of mine to use Maxima Fab 1 filter oil it is less prone to migrate out of the filter and when using it on a vehicle with a Mass Air Flow sensor it is less prone to cause sensor fouling problems.:confused::confused:
 

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Who cleans a K&N? The one I put in my 4.0L Explorer went roughly 90,000 miles before I cleaned it. (it moves four times as much air as my DL1K) No difference in performance before or after I cleaned it. The only reason I bothered was because I figured it had been long enough. It looked nasty, but obviously wasn't affecting airflow or mileage at all.
 

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Discussion Starter #6
K&N

The K&N website recommends cleaning at 25000 miles if in dusty conditions. 25000???
I think I'll have a look at it sooner than that.
 

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Discussion Starter #7
Nice Heavy!!!

I live in Ohio and mine was pretty filthy at 8,000 miles, 3,000 of which was a trip to Maine that included some "offroad" conditions.

I'd say every other oil change if you live in a dusty condition.

Make sure to grease the seal too...it helps.

BTD
What can I substitute for the K&N seal grease?
 

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Yes, 25k is not unheard of... There's just no need for it sooner than that. Heck, they actually filter out MORE particulate the more clogged they get. Yes, they begin losing efficiency at some point, but it takes a LOT to get it to that point.

Heck, the Ford Focus circa 2005 or so comes with a 'lifetime' air filter. It can hold up to (IIRC) 500 grams of particulate before its performance affects engine operation. Most paper filters accumulate less than 10% of that over the life of the vehicle combined.

IMHO, check it at 25k and see if it's looking grungy, but there's honestly no need to clean it any sooner than that. In all reality, it can probably go MUCH longer.

I also forgot to mention in my earlier post that my 4.0L Ford engine displaces four times the air that a VStrom does, and its filter is roughly 2/3 the size of the Strom's filter. Don't worry about it... Inspect it? Sure. But I wouldn't bother touching it unless it's really bad...
 
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I use Bel-Ray Waterproof grease...same grease I use on all of my bike that requires greasing...and it seems to work fine...and I do think it helps.

BTD.
 

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Discussion Starter #10 (Edited)
K&N

Here's further proof of the shenanigan's the local dealer pulls off. When I took the wee in to get the valves checked at 15k I had only recently changed out the OEM air filter with the K&N. Maybe at most 5K on it since new but probably less. When I picked the bike up the ambitious and, paid on commission, service writer states they had to clean the filter, it was horribly dirty, and of course there is the charge for the cleaning and oiling kit.
Had I known what I do now I would have challenged him about the extent of the filth and only then... paid up.;)
 

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Who cleans a K&N? The one I put in my 4.0L Explorer went roughly 90,000 miles before I cleaned it. (it moves four times as much air as my DL1K) No difference in performance before or after I cleaned it. The only reason I bothered was because I figured it had been long enough. It looked nasty, but obviously wasn't affecting airflow or mileage at all.
Let's talk facts.

--The air filter does not have any effect on gas mileage in any modern engine with a mass airflow sensor. It will cause a reduction in ultimate air flow and a loss of top end power. If you never had the gas pedal floorboarded, you never were at max, so it made no difference. Even if you did floorboard it at less than top rpms, it made no difference. If you had it floorboarded at max rpms, you forgot the feeling of driving with a clean air filter. Any and every dirty air filter will reduce air flow at max. Every one.

--If the back side of the air filter was dirty, you had dirt being pulled through the filter and into the engine.

I'm not a K&N fan. I think their hype is all hype. I haven't seen any air flow increase over a new stock-type air filter, and have seen the outlet side have dirty air boxes in some cases.
 
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