Yes i would be a little worried if there is any liquid oil left in the car. Do a few short interval oil changes and you should clean the engine out.
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11' m57 335d 165k Miles - JR 2, ATM Full Exhaust & Intake, Wagner FMIC, AAR Boost Pipe, AAR Swirl Delete, AAR EGR Delete
08' n54 135i FBO E85 - SOLD
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