BMW X3 F25 - Leaking Rear Main Seal in N55 engine from yelping Watch Video
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Description: N55 engine developed a sqealing noise after 15,000km. The noise is especially loud underneath the engine, where the engine and transmission are connected. Most people would naturally assume the noise is coming from the belt/pulley/tensioner pulley but no, the noise is actually due to a leak in the RMS/crank seal! nnUnfortunately it is intermittent, some days the engine sounds perfectly normal, other days the engine squeals or howls with varying intensity. This is one of the worse incidents when
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