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Old 08-31-2015, 07:49 AM   #3
JFP in PA
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Join Date: Feb 2005
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Quote:
Originally Posted by JayG View Post
Had to add approx 3 liters of tap water to my coolant tank due to a leak at the water pump while driving home

As I am about to change the water pump, do I need to flush and refill with new coolant/distilled water mix, or just add some more of the proper coolant?
You have diluted your coolant and introduced minerals with the tap water; as you are going to change the pump anyway, I would go with fresh coolant mixed with distilled water.
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