why has the coolant in the radiator reservoir turned black in my Jeep Cherokee?

  • Thread starter Thread starter Dittohead
  • Start date Start date
D

Dittohead

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ive drained and flushed the radiator twice in 4 months
i had just completely filled the radiator and reservoir with 50/50 coolant maybe a month ago...i checked it yesterday and it was black.
 
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