Anyone with a D3 CAI - Issues with oil leakage
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  • 2 Post By sdobert
2008-2013 Cadillac CTS Performance Mods Discussion, Anyone with a D3 CAI - Issues with oil leakage in Cadillac CTS Second Generation Forum - 2008-2013; I installed the D3 CAI about 3 years ago and now at 60K+ miles on the CTS I am having ...
  1. #1
    Nivek's Avatar
    Nivek is offline Cadillac Owners Fanatic
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    Anyone with a D3 CAI - Issues with oil leakage

    I installed the D3 CAI about 3 years ago and now at 60K+ miles on the CTS I am having issues with the engine. So far the dealer has claimed oil from the KN filter screwed up my MAF sensor and they also think it may be hampering the throttle body. Anyone have issues with D3s CAI? It has been on there for probably 40K miles and cleaned/recharged once in that time frame. It claims to only need recharging 50Kish miles.

    I was talking to the mechanic (not service advisor) this morning and he told me they have had few after market CAI do this and it was the oil in them.

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  3. #2
    X E Ryder's Avatar
    X E Ryder is offline Cadillac Owners Member
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    Who did the re-oil of the filter?

    Excessive oil is to blame for a ton of problems.

    I've reached the point where I just throw away my k&n at 50k and buy another.

    I don't trust that all the supposed particles are gone when you clean and re-oil. I don't think the cloth ever flows as well after recharge - its never as light and clear again. I've also never had oil bleed through from one.

  4. #3
    JusJZ is offline Cadillac Owners Member
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    What year CTS?

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    Pdabs's Avatar
    Pdabs is offline Cadillac Owners Enthusiast
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    Quote Originally Posted by JusJZ
    What year CTS?
    According to his profile 2009

  6. #5
    sdobert is offline Cadillac Owners Member
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    Re: Anyone with a D3 CAI - Issues with oil leakage

    I worked in air induction and intake manifold systems for an automotive supplier for many years and we had done a few studies on the "reusable" filter elements and found that with each cleaning and re-oiling that the pressure drop was only slightly affected, but the big thing was that the dust capacity and filter efficiency was significantly lower. If I remember correctly, manufacture oiling, the efficiency was ~98% while after the first re-oiling dropped to ~80%with the next oiling dropping to ~65%. Now this study was done around 8 years ago, so the manufactures may have changed the media/oil combination to provide better efficiency now a day. We also did notice when testing these filters to a media migration specification that the oil would migrate through the media resulting in a greater chance for oil to build up on the hot wire in the mass air flow sensor.
    ktr-sb and ktr-sb like this.

  7. #6
    Dano636's Avatar
    Dano636 is offline Cadillac Owners Member
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    Re: Anyone with a D3 CAI - Issues with oil leakage

    Every time ive cleaned my K&N it never looks as good, finally decided to not F with it and just buy a new filter every 30000ish miles

  8. #7
    Panzer Leader's Avatar
    Panzer Leader is offline Cadillac Owners Enthusiast
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    Re: Anyone with a D3 CAI - Issues with oil leakage

    ^What he says.....Or get a dry reusable and replace it as needed.

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