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Old 12-19-2005, 07:26 PM
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Chevy 350: Black smoke, is it oil or gas

I was looking for a 350 to use for a project and a friend of mine had one but said it was smoking black when he ran it last, he replaced the valve seals but it still smoked so he thought it was a ring problem and pulled it out. Would black smoke be burning oil or gas? Would it be safe to use or how long would it run that way. Is there anything I could run in the oil to keep it from smoking or using oil?
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