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Old 10-17-2016, 02:41 PM   #2
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Join Date: Dec 2008
Location: Queensland, Australia
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The usual culprit of oil on the outside of the intake tube is from the hydraulic steering fluid overflow pipe - that's the reservoir located just behind the intake @ 11 o'clock in your photo.
Check the level and only use Pentosin CHF11S or CHF202 hydraulic oil to top up.

Oil in the inside of the intake tube can mean a failing AOS - check for oil again in say a thousand miles. Can you remove the oil fill cap OK with the engine hot & idling - a failing AOS causes a vacuum making the cap (sometimes) difficult to remove.....
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