Redline Water Wetter

It is a surfactant, it reduces the surface tension of the coolant fluid and by doing so reduces the amount of bubble formation in the coolant passages.
 
yes, add it in both.

I have proof it works. Logging with DSMlink on my 97 GST Spyer, during 110* cali summertime heat with a large FMIC blocking the radiator my CEL was set to go off (programmed via dsmlink) any water temps over 220*. It would happen alot at stops, because there just wasnt enough air coming into the radiator to help matters, even running both fans full bore at all times didnt do much.

after a can of water wetter temps dropped down to a consistent 205* with the same conditions (Stop and go traffic in 110* heat). I later added a special shroud that poked 2" under the bottom of the car to pull in additional air during cruising, and a shroud between the fmic and radiator, so any air that was going through the fmic had to also go through the radiator. new cap, coolant and more water wetter, and a 170* tstat and temps under same conditions listed above were 195* at a dead stop and 180* during highway cruising speeds. for the remainder of that summer and my terms with the car, the CEL never again went on for coolant reasons. Its a DSM, so the CEL went on for other reasons afterwards.........
 
I use that stuff with only water. That way at the track i don't have coolant in my system. It also has the additive in it to prevent aluminum headed cars from forming corrosion that is asociated with running only water.
 
I dumped it in both, it seems like it runs cooler but it is hard to tell from the idiot guage. Plus the ambient temperature in Fort Wayne has been below 30F at all times since I dumped it.

I need an SCT LiveWire so bad :(

I think MRaburn should give me one to evaluate and review :D