Brian K,
You certainly did miss something. Read your Owners Manual again. It states that there a number of antifreezes that will provide the same protection as the Mercedes-Benz antifreeze, but have not been tested by them. This stuff MB sells for $13/gal is no better than the antifreeze you can buy off the shelf for about a third of the price. Whether It's tested by MB means nothing to me. The alternate brands are tested somewhere, because they all state they are safe to use in any type of engines.
The "new" MB antifreeze lists the ingrediants, but says nothing of the Glysantin G 05 formulation. It used to be clear in color. Now it's orange. So is Zerex. Both are made by Valvoline Oil, which is a division of Marathon-Ashland Oil. Zerex is safe to use in your Mercedes. Says so on the bottle. The label states that Zerex is safe to use in any engine.
I don't care about the price. I buy the best products at th best price. Been doing for the last ** years. Around here we call it Economics 101, or just plain smart shopping.
I care not, which product you use. If you want to believe that Zerex is better for your car, then by all means, use it...
Bill Lewallen;Lexington,Ky.
The Blue Grass State; but the grass is really green-like our antifreeze...