Anyone (Doc especially),

When I bought my Boxster, (from a dealer, not Porsche) I opted for the extended warranty. To make a long story short, the warranty is called The Choice, and they send me some stuff that I'm supposed to put the the coolant overflow tank (supposed to decrease heat, wear). Has anyone heard of this or maybe used it? I'm very leary about putting this suff in my car, but seems to be needed if the warranty is to be in full effect.

Any ideas?
Thanks

 

What is the name of it? Some use water wetter, but I thought that was when running water only, not coolant. I honestly would not put it in either. A full coolant flush every 60k miles or so is the best thing you can do for the cooling system (even though they say it is lifetime coolant)