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Old 09-08-2017, 11:29 AM   #5
Ironangel
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Join Date: Feb 2010
Location: Falls City, Nebraska "100 Miles From Nowhere"
Posts: 2,219
Re: White build up in a brand new aluminum water neck

Make sure you have good clean grounds from the block to the cab, block to battery, as well as cab and bed to frame. Sometimes the pot metal thermostat housings act as an anode and will deteriorate quickly. Using hard water in your coolant system promotes the electrolysis effect.
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