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The Water Cooler
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04 sierra z71 smoking when I start. HELP
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<blockquote data-quote="sting75ray" data-source="post: 2099073" data-attributes="member: 27600"><p>Mine does the same thing. Gotta love the black smoke of a diesel. My daughter is now driving my 06 Duramax so I put it back on factory settings. No need for a 16 year old girl to have 600HP. As for the orignal post I would change the oil and go back with 1/2 oil and 1/2 Marvel Mystery Oil. Run it for 1000 miles or so then change again and add 1 Qt of Marvel to your oil.</p></blockquote><p></p>
[QUOTE="sting75ray, post: 2099073, member: 27600"] Mine does the same thing. Gotta love the black smoke of a diesel. My daughter is now driving my 06 Duramax so I put it back on factory settings. No need for a 16 year old girl to have 600HP. As for the orignal post I would change the oil and go back with 1/2 oil and 1/2 Marvel Mystery Oil. Run it for 1000 miles or so then change again and add 1 Qt of Marvel to your oil. [/QUOTE]
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04 sierra z71 smoking when I start. HELP
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