Air/Oil separator and leaks
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This is a discussion on Air/Oil separator and leaks within the Everyday Impreza Talk forums, part of the Community - Meet other Enthusiasts category; Just curious...does anyone know if the aftermarket air/oil separators help with oil leaks? I had some oil leaking on my ...

  1. #1
    Registered User
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    Jul 2007
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    Air/Oil separator and leaks

    Just curious...does anyone know if the aftermarket air/oil separators help with oil leaks? I had some oil leaking on my manifold. Maybe I'm way off here.

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  3. #2
    Registered User G0ATLIF3's Avatar
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    Mar 2014
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    Alberta Canada
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    An AOS is made to remove Oil particles from the intake and helps with Octane levels(by taking oil particles out of the intake air), and detonation due to build up of oil in: the intercooler, Throttlebody, intake manifold Etc. It does not do anything for stopping leaks. When you say manifold which one are you talking about? Intake or exhaust? Maybe you mean the Head or valve cover?

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