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Old 02-06-2019, 07:51 AM   #5
Dead Parrot
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Join Date: Aug 2012
Location: Oklahoma City, OK
Posts: 2,461
Re: Cooling System Flush Advice Needed

Did you use distilled water + coolant for the cam break in? A lot of tap water is 'hard' or full of calcium products.

If you are worried about damaging the new radiator, use an old one for the engine flush process.

Have you installed a new heater core? That can be another source of gunk getting into a new clean system.
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