Water Glycol Fluid consists of a solution of water ethylene or diethylene glycol, a high molecular weight polyglycol and an addictive package. The water to glycol mixture typically contains 38 to 45 percent water.These fluids usually contain red or pink dye to aid in their identification.
With water in the fluids' formation evaporation is ongoing and upper operating temperature limits must be considered.
Checks must be made periodically of the water content .The fluids' typical operating temperatures should be kept below 150 degree C