water wetter

I my duster i used something but if i say you going to laugh but i swear it took 15 degrees off my engine temp.and as long as i kept moving in the summer heat i could drive no problems long stops for traffic i still would have to shut it down .(liquid cascade)>>>>>i swear it worked well and cheaper than water wetter i used about 1 1/2 cup for my 440 duster.