I just bought a Mercedes and coolant in it's almost white! It's not oily for sure but I have no clue why this has happened? Is it possible that mixing coolants can behave this way?

Asked by Jun 25, 2017 at 07:54 AM about the 2004 Mercedes-Benz E-Class

Question type: Maintenance & Repair

I drained the system once and coolant was just like milk but a liiiittle bit darker. I waited over night if something separated from the coolant but it still remains perfectly mixed.

1 Answer

262,135

That's normal, someone must have used Pentosin NF. It's slightly blue tinge when it pours out of the bottle. and goes off white when it heats up in the cooling system....https://www.fcpeuro.com/products/nf-engine-coolant- antifreeze-g001100-15l

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