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Old 11-01-2014, 03:02 PM   #1
tmumolo
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Air Filter Conundrum/Question?

I have a 2012 MK3 and I live in the High Desert in California. I changed the air filter a little over 10 months ago and have driven approximately 7200 miles since then.
There is a lot of dirt and wind up here so I thought I'd check the air filter; I even bought a new one because I figured I'd probably need it.
When I unscrewed the four screws, pulled off the top cover, what I saw was what looked like a brand new filter right out of the box. No dirt, no dust; nothing, just a pristine motorcraft air filter. I checked everything to make sure it had been seated properly and it was. My question is this; am I overlooking something that would account for a filter that looks like no air has gone through it?? I'm serious, it looks just like the new one I just bought.


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Old 11-01-2014, 04:01 PM   #2
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I have never had a filter that looked dirty after that short a time..even after 20-30K, they still look pretty new.
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Old 11-01-2014, 09:16 PM   #3
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What's your engine air filter look like after that amount of mileage?
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Old 11-01-2014, 10:20 PM   #4
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Yup, I rarely change filters. They seem to last impossibly long before even looking remotely dirty. I have a K&N now and I'll probably clean it once a year, and I doubt it'll need it.
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Old 11-02-2014, 05:57 AM   #5
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^^^K&N recommends cleaning every 50K..don't do it more than it calls for. I checked mine at 25K per their recommendation and it still looked pretty clean. Almost to 50K and ready to do the clean/re-oil.
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Old 11-03-2014, 12:29 PM   #6
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Did you pull the filter out and look at the bottom side?
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Old 11-04-2014, 04:10 PM   #7
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Even paper filters get more efficient with a light coating of dirt. The airbox is designed to make large particles drop out of suspension .
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Old 11-05-2014, 01:05 PM   #8
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Also consider that the air intake is up inside the fender in an area where big chunks and quantities of dirt etc are unlikely to find their way.
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Old 11-05-2014, 03:02 PM   #9
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I'm at 97,000 miles. Have changed my filter twice. One in there looked brand new both times.
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