Originally Posted by
onehundred80
The original antifreeze is blue, the Zerex G05 is yellow, draining the original blue leaves some still in the system and adding the Zerex gives you a greenish fluid. But change it anyway as the wrong fluid harms the engine block material slowly.
That's great info, makes sense to me. Since I'm not sure the FCA dealer has the right coolant anymore, just go get the Mercedes blue stuff?