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Coolant Concerns #2106762 07/09/16 12:03 PM 07/09/16 12:03 PM
Joined: Feb 2008 Posts: 64 Detroit Got2Gnow OP member
Got2Gnow OP member Joined: Feb 2008 Posts: 64 Detroit	The overflow bottle in my 1971 Dart Swinger has brown and muddy looking liquid in it. I removed the radiator cap and saw the same brown and muddy looking liquid. So I'm thinking it's time for a radiator flush. I opened the petcock and out flowed crisp clean lime green anti-freeze. What is going on?

Re: Coolant Concerns [Re: Got2Gnow] #2106775 07/09/16 12:31 PM 07/09/16 12:31 PM
Joined: Jan 2003 Posts: 4,395 The Pale Blue Dot Skeptic master
Skeptic master Joined: Jan 2003 Posts: 4,395 The Pale Blue Dot	The sludge settles out. Do the flush- easy peasy.

Re: Coolant Concerns [Re: Got2Gnow] #2106783 07/09/16 12:45 PM 07/09/16 12:45 PM
Joined: Feb 2005 Posts: 28,312 Cincinnati, Ohio Challenger 1 Too Many Posts
Challenger 1 Too Many Posts Joined: Feb 2005 Posts: 28,312 Cincinnati, Ohio	Anti freeze is heavier than water, then water and then oil is lightest and it is at the top when it sits/settles out. It sounds like you have oil and coolant mixing...not good. I'd flush it hot and only use water this time and see if it mixes again which I bet it will. That way you won't waste anti freeze since it's summer time now. Just don't forget to put anti freeze back into it this fall if it turns out OK.

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