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Message: <blockquote data-quote="azan23uk" data-source="post: 36012" data-attributes="member: 8654"><p>Hi All, my return to owning e39 has not been good. After done with the top overhaul, my mechanic still discovered massive build up of pressure at expansion tank this morning. With worried face, he said, it's most likely engine block cracked. No wonder he said that the header was generally still in good nick despite signs of burnt gasket due to probably minor episode of overheating. Any second opinion on this? He has to start asking around for new block and added that M54 3.0 engine kosong may be a little hard to find. But he will check again to eliminate any other causes of the pressure build up. It's a rare case that M54/52 block cracks. Any bros here can lead me to a good place/source of good M54 3.0? You can call me straight at 012-3827078. TQ</p></blockquote><p></p>