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Originally Posted by maddogg20
Here, check this out guys. Im going to buy one next week.
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Originally Posted by ForcedInduction
It's a radiator cap with a magnesium anode on a string.....
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To work, the magnesium needs to react with something. What's it going to react with? It will be installed in a closed system, but all their testing was done on a system open to the atmosphere, and with used coolant which probably isn't very similar to what is in your MB.
What chemical compound is created? They don't say. As the Mg reacts, it creates some new compound. Often the result will be an oxide. Some oxides, like aluminium oxide, are very abrasive (that's why they make sandpaper with it). Is whatever Mg compound created bad for the system?
You might want to get these questions answered before trying it. If you're going to flush the system every year, it probably doesn't matter, but if you intend to leave it for ten years, it probably does.
Of course, you could just try it and see. I can't see it's likely to cause much damage. Particles will most likely settle in the radiator where they'll do little harm, corrosion protection will be supplied by the Mg, and if it has any negative effects on the coolant performance, well, I would like to think they would have noticed in their testing and not brought the product to market.