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Discussion Starter #1
US 2015 CRV EX (2.4l Earth Dreams Engine).

The image shows oil (or maybe just dirt?) on my last filter with ~20K miles on. At ~30K miles I swapped it first and that one was far worse.

Before this filter went in I swapped out the PCV valve (quick/easy task).

I did manage to push a trombone brush quite far down the PCV hose and it was clean. Since then I bought a longer/ thinner brush but have not had time to get to the PCV hose .

Has anyone else seen this? Swapping the Engine Air Filter every 20K miles I don't mind, assuming no damage is happening.

The CRV is near perfect otherwise. Swapping out the transmission fluid for Castrol Transmax made the CVT super smooth (done over 20K miles ago). Just regular maintenance otherwise.

 

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That's just dirt, so no need to worry. Usually you have to replace those filters every 12k-18k anyway, so at 20k it definitely needs to be replaced. Nothing to worry about at all.
 

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Everything in Moderation
2006 CR-V EX, 5MT
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It's the same stuff you breath in everyday.
Actually, many intake systems routinely suck in a bit of oily vapor from the PCV (crankcase ventilation) systems. Depending on the flow of air across the filter housing, this could account for the pattern in the original post.

Us frugal Gen2 owners are lucky, the conical filter on ours can be repositioned to collect the dirt on the other side. :rolleyes: 🤣
 

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It's the same stuff you breath in everyday.
OMG, :eek: And just when I thought the Coronavirus was bad :unsure: Glad we live in the country. All we breathe in are diesel tractor fumes and crop chemicals.
 

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Discussion Starter #7
OP here. Our other vehicle's filter (RAV4) never looks anything like this; it just has light brown dirt.

Do you other Gen IV CRV owners see the same kind of dark pattern? If so I guess it's normal for the PCV to suck a little oil.

Our CRV drop its oil level between change. Perhaps ~half a quart every ~five thousand miles. Never before have we had any vehicles 'burn' any noticeable oil.
 

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i change mine every six months just for the hell of it but somehow i haven't changed my mother's 17 crv since she bought it and that thing was about as filthy as the pic from OP. I threw in a wix branded filter and recently changed her cabin air filter which was equally as dirty.
 

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Mine are like that too if i dont change it. I now just change both filters once a year since they are so cheap. I buy a whole bunch at once from Rockauto.
 
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