The coolant has recently been changed, and replaced with MB coolant at the dealership. The temp has not been soaring, but when it hovers around 85C when the outside temperature is in the 40's, the thought of 95F days with 90% humidity got me thinking bad thoughts.
Is the RedLine product an additivie I put in with the MB coolant? Does it have any side effects? Your driving condidtions are not too far different than mine, and if you have had success, I'll give this a try and save the money.
Thanks to both of you for the thoughts.
94 E500 (Silver/Black)