Yeah, that's what I was trying to avoid, Russ. Sorry yur in that boat. While this post started out as Freeze-12 info., I switched my choice to Envirosafe, but both are for sale with any fittings, oil, dye, whatever at the aforementioned website. I probably could have improved my system by changing out all the o-rings, but since I didn't want to do all that, the lower operating pressure, and larger molecules of the Envirosafe, and the fact that it mixes with all oils, was a good deal. Freeze-12 may actually cool better than Envirosafe, but I tested my vent temps today....during 95F in sun, and 80F after dark, both measured 40F when cruising on highway. Stopped in traffic, it rose to 50F. I'm very cool with it.