What the heck is this residue on the coolant reservoir tube?

MICA4R

New member
I have 45K miles.
Do I need a flush?
The fluid is clear and pink and that residue wipes away with a paper towel? Mold?
What are your thoughts?

IMAG0558.jpg~original

IMAG0559.jpg
IMAG0557.jpg~original



Also, is the Radiator hose supposed to look like that? with the white crust?

Thank y'all. (in TX now)

Missing Chicago very much!
 
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I believe that is silicate residue from the antifreeze. Not uncommon as far as I know. When I had it I would change the fluid and wipe the residue off. Never caused a problem for me.
 
if there is that much residue on the tube that i can see, i can only imagine how much is present inside the system?
 

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