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Old 04-19-2009, 02:29 PM   #1
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Oil around intake manifold (pics)

I was taking out my air filter to service it and I noticed some oily residue around the plumbing going into the intake manifold. Any idea of where it is originating?




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Old 04-19-2009, 04:55 PM   #2
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Tube from the AOS?

Look at the throttle body and the intake tube downstream of where that ~1" tube enters and see what you find in there.

Instructions are on Pedro's web site for cleaning the throttle body and mine for replacing the AOS.
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Old 04-19-2009, 05:48 PM   #3
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Thanks Mike, I'll take a closer look at that and see if it could be stemming from the AOS tube, however, I just went back down to investigate and I noticed my power steering fluid is low and the cap was all sticky/gunky. The dipstick is bone dry so that's not good. I can't tell how the fluid could've leaked out yet.

I do know I need to top it off with some fluid. Is there an ok alternative to Pentosin the local auto stores carry? I don't think they carry Pentosin CHF 11 S.
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Last edited by Adam; 04-19-2009 at 07:41 PM.
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Old 04-19-2009, 07:37 PM   #4
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Errr...I did some checking and it looks like you shouldn't mix brand X with Pentosin 11S so I'll have to order some. Found one of MN's old posts where he linked a place that sells it for $18 a liter which is cheap for this stuff. I still don't know exactly how this stuff leaked out or if that is PS fluid on the manifold. I haven't noticed any issues with the steering so it looks like I caught it before problems developed. The cap was on tight so I don't know how or where it got out. I'll just have to refill and keep an eye on it.
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Last edited by Adam; 04-19-2009 at 07:39 PM.
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Old 04-19-2009, 11:22 PM   #5
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There is a breather hose connected to the power steering resevoir which vents to atmosphere. The fluid could be coming from that, though its only an overflow if the fluid overheats if I remember correctly.
And you are correct, don't mix Pentosin with any other fluid.

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