Originally Posted by Diesel Giant

All refrigerants are chemical concoctions. A blend means that it is an azetropic mixture and is the way to get the desired properties of a specific refrigerant and engineer out what you dont want. As long as you are not using an "near azertropic" mixture which will experience fracternization if introduced in the system as a vapor. They must always be charged as a liquid.

Using what many keep saying is a "blend" if it was used in the application for which it was engineered. Freeze 12 was engineered with modern technology to do just what R-12 does but with lower pressures. Same idea with R-410a replacing R-22, except you must use different equipment to handle the almost 100% increase in pressure with R-410a.

What most people dont understand about refrigeration is that it all works basically the same. I could run R22 in the MB and get it just as cool if I changed out different components. Point is that Freeze 12 is designed to work in place with R-12 with better performance. Don't listen to all the "sky is falling" types out there.