Originally Posted by
Tpinks
That is 100% false, about type IV...
Type four is thick compared to type I as it is straight Glycol where as type I is always a Glycol/water mix and the water content is based off of that day's temperature.
Might want to call the MFG, on the cornstarch thing. Keith (Iceman) A. contacted one of the MFGs of our approved deice fluids and got the deets. Why do you think the Type IV dries to a chalky dust whereas Type I is almost invisible. By all means, think what you like.....
https://en.wikipedia.org/wiki/Deicing_fluid