Here they go again! This resurrects a very deep hatred of the environazis with me, they cost me my career in refrigeration as I am allergic to the concocted, legally mandated replacement for Freon. What really pisses me off is the fact it was only banned here, the rest of the world still used CFC’s and AFAIK still do! Bastards, the lot!
The German automobile manufacturers have determined that the proposed replacement HFO-1234yf has a significant risk of causing a fire in front end collisions. In the event of a fire, the product converts to trifluoroacetic acid and hydrofluoric acid, two highly toxic substances. As a result, they are not using it.