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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > N54 Turbo Engine / Drivetrain / Exhaust Modifications - 335i > If the flywheel is clean then likely OPG, not RMS, right?

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      Yesterday, 10:10 PM   #1
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Drives: 2007 E90 335i 6mt
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If the flywheel is clean then likely OPG, not RMS, right?

I have an oil leak. Residue is everywhere on the bottom of the engine including back pay the bottom of the transmission. At first I feared that it would be a rear main seal, but the little port where you can see the flywheel is clean. I've wiped it clean to see where it drips again, but haven't gone so far to put in UV dye. Nothing above the oil pan is dirty, so I don't think it's the valve cover, though everything is really tight and it's hard to tell. I think it's the OPG. Any tips for making sure it's not the vcg too? Any other things I should do while I have the subframe dropped? Thanks in advance.

Edit: here is a pic where you can see the clean flywheel.

Last edited by srey; Today at 12:40 AM.
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