Regarding your car losing oil; you either have a leak or your car is consuming it.
I would suggest removing the under tray, power wash the bottom of the engine bay, drive around for a little bit, then check to see if you have leaks.
If you're FBO, with a catless downpipe, and consuming oil I would think you would be seeing some smoke coming out the back.
In my case I had both - oil pan leaks plus bad turbo seals dumping oil into the chamber.
If your front main seal is not compromised I wouldn't replace it.
Quote:
Originally Posted by fazman
2008 N54 FBO, correct
* Still original FMS
* Still original RMS
* Still original OPG
I am losing about 1/4 qt of oil every 1000 driven miles.
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