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GL Class (X166) 2013-2015 after facelift became GLS (X166)

2013 GL450 (X166) leaking oil from metal air intake

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Old May 27, 2022 | 11:25 PM
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2014 GL450
2013 GL450 (X166) leaking oil from metal air intake
Can anyone tell me what the oil leakage could be caused from that is on the outside of the aluminum air charge duct that’s downstream of the engine filter? Thank you everyone in advance.


Last edited by jgallia; May 28, 2022 at 12:33 PM.
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Old May 28, 2022 | 10:37 PM
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2014 GL450, 1992 W140 300SD, 1993 W140 300SE, 1987 E30 Convertible
Turbo, head cover leak, front cover leak under cam magnets and etc. Wash it and observe.
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Old May 29, 2022 | 12:50 PM
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I think you have more than one leak.

The first couple of photos show the common front cylinder head cover leak. Easily fixable by dealer or indy.

Last photo shows an active and more serious imo leak. Could be turbo oil supply.

Agree with cleaning all of the oil away and watch it closely,
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