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Message: <blockquote data-quote="Schwepps" data-source="post: 214141" data-attributes="member: 3592">Don't say that so soon! <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite2" alt=";)" title="Wink    ;)" loading="lazy" data-shortname=";)" /> Not irregular oil burn, just ridiculously high.In Macheet's case they didn't say what happened and just shipped the old engine off, but Macheet suspected piston ring blow-by. This kind of problem can be due to a number of things, but in the absence of an oil leak and coupled with high fuel consumption, compression loss in one or more cylinders caused by blow-by would be the first suspicion. Apart from wasted oil and fuel, this would foul up everything south of the cylinders. How it can happen in a brand new engine is a mystery. <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite5" alt=":confused:" title="Confused    :confused:" loading="lazy" data-shortname=":confused:" /></blockquote>