whats the big deal about "Mercedes" coolant?

[neumann]

I am doing my 75K service and have some concerns about which coolant brand to use. In responses to my 75K service thread some folks advised using only "Mercedes" coolant. I called some of the indies here in town and all said they use off the shelf coolants. I may have one of them do the coolant because I am running out of time before I leave on a trip.

So whats going on here? Is it ok to use Prestone or other chain parts store coolant or should I stick with "Mercedes" coolant?

If parts store stuff is OK which would you suggest?


Suganami (spelling?) said he had a water pump failure after using regular "green" color coolant? Coincidence?