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M54 Engine Oil Consumption
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<blockquote data-quote="tckhor" data-source="post: 736225" data-attributes="member: 4690"><p>Probably due to hardened valve seals not sealing the valve stems properly. In such a case, if the car is left overnight, there will be a puff of smoke on startup the next morning. This is due to the oil seeping down and accumulating at the valve seats. The seats are probably sealing OK as the compression readings are fairly consistent. Was a wet and dry test conducted ? </p><p>I read about a product called Forte valve seal conditioner which can revitalize the seal. It has some good reviews. If it is available here, can give this product a try.</p></blockquote><p></p>
[QUOTE="tckhor, post: 736225, member: 4690"] Probably due to hardened valve seals not sealing the valve stems properly. In such a case, if the car is left overnight, there will be a puff of smoke on startup the next morning. This is due to the oil seeping down and accumulating at the valve seats. The seats are probably sealing OK as the compression readings are fairly consistent. Was a wet and dry test conducted ? I read about a product called Forte valve seal conditioner which can revitalize the seal. It has some good reviews. If it is available here, can give this product a try. [/QUOTE]
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