Geez, with the warnings from Mercedes Benz about only using Mercedes coolant, I don't know why anyone would risk a car that is worth tens of thousands of dollars trying to save $3 on a gallon of coolant. A gallon of the yellow-ish Mercedes coolant is $10 or less.
I'd like to know who claims Zerex is a direct replacement for MB coolant. Mercedes or Zerex?
2001 E430, Bourdeaux Red, Oyster interior.
1973 280SE 4.5, 170,000 miles. 568 Signal Red, Black MB Tex. "The Red Baron".