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Ol' Ron · 04-02-2019, 12:05 PM

This is normal for a Multi grade oil. It has cleaning agents in it and it tens to remove the carbon from the cast iron. Or so I'm told??

04-02-2019, 12:05 PM	#16
Ol' Ron Senior Member Join Date: May 2010 Location: Chester Vt Posts: 8,855	Re: oil getting black This is normal for a Multi grade oil. It has cleaning agents in it and it tens to remove the carbon from the cast iron. Or so I'm told??