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Old 07-06-1999, 01:14 PM
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Benzmac et. al.-

I did a search on WaterWetter and saw a few postings from April of this year. Since then, have you received any more information on WaterWetter? Good? Bad?

I'm considering using some in my 300E, but I'm hesitating due to some unknowns in my mind. It's not a $$ thing as this product is very inexpensive. Does anyone have any instances that WaterWetter does not work? Side effects? How will Waterwetter work with MB's coolant?


Stephen Davis
1988 300E 91k miles "Autto"
MBCA - N. Texas Section

Old 07-06-1999, 01:22 PM
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I've used waterwetter in my Peugeot and it does work. The coolant temp dropped 10-15 degrees. It's basically a detergent that minimizes surface tension, thus making it wetter. Never had any ill side effects in my Peugeot. Haven't put it in my benz yet.
Old 07-06-1999, 04:37 PM
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Join Date: Mar 1999
Location: Vienna, Virginia, USA
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I don't get it. What does the surface tension have to do with the heat transfer ability of a fluid?
Old 07-06-1999, 07:54 PM
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To better explain, fill a glass full of water, as you reach the top fill it carefully. What you will notice is it rises past the top the glass, this is surface tension and provides a “skin” if you will, to hold it, simple physics.

Now try the same thing with a metal container, notice air pockets, this is caused by surface tension, waters “skin” in action again.

Now add a detergent, and try the above experiments, you’ll notice it won’t work as well. This proves the theory, since water contacts more surface it increases the ability to transfer heat. This is why heat sinks on most computers have a heat transfer compound, a.k.a. thermal grease, to increase heat transfer. A gas will conduct heat, but not as well as a liquid.

Old 07-06-1999, 09:32 PM
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Join Date: Mar 1999
Location: Suwanee, GA, USA
Posts: 4,712
That was a kickass answer George.


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