Build up in overflow tank | Ford Explorer Forums - Serious Explorations

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Build up in overflow tank

V8Jake

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Joined
May 19, 2017
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Year, Model & Trim Level
2009 Explorer XLT V8 4x4
I found some build up in my coolant tank. Is it anything to worry about? No heating or cooling problems but previous owner appears to have mixed in green coolant at some point.

IMG_20171227_123459.jpg


IMG_20171227_123447.jpg
 






No worries. There is a wire spring in the lower hose to prevent collapse. It gets rusty which is what that looks like.
 






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