Anybody used Water Wetter?

[namatjira]

As you can imagine a supercharged Z3M does suffer from heat issues when caught in London traffic in summertime.

I has been suggested to me that Water Wetter such as that from Redline might help but I am reluctant to try it out without further research. I do understand the claimed science behind it but would really like to get the experiences of anyone here who might have used it. Obviously the various ///M engines or any others that have been turbo'd or supercharged would be of greater interest as these would tend to be more like mine and run hotter.

Many thanks in advance.