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      12-11-2012, 05:02 PM   #7
JamesM3M5
Some dude
 
Drives: E28 M5, E92 335i
Join Date: Sep 2011
Location: Northern VA

Posts: 1,654
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Need a new o-ring in the chargepipe. I pulled them out to measure and ordered ones that were a tiny bit fatter, but I can't remember what size. They are not available from BMW separately. I ordered a bag of them from McMaster-Carr.

It could also be oil from an oil filter housing leak making its way down there, but that usually cakes dirt on the front of the motor.
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E92 335i/6MT Dinan Stage 3: intercooler, oil cooler, intake, flash, exhaust, LW dual-mass flywheel.
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E28 M5 w/ buncha stuff, R171 SLK350
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