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Message: <blockquote data-quote="NightShade" data-source="post: 3076229" data-attributes="member: 29706"><p>If you want a really clean engine just go get some diesel oil.  As a teen was working at a truck wash where they also serviced the trucks and was running low.  One of the guys "topped" my car up for free with some 15w40 Rotella-T.  The bad thing is the engine was old and the rings were likely full of carbon which was quickly cleaned out causing the rings to pretty much fall out.  But once the carbon started getting cleaned out it ran REAL good till about the time the compression was gone.</p></blockquote><p></p>