Don’t Convert to R134a
I've used Duracool for 3 decades. It is an HC refrigerant, before Envirosafe. Switched to it in my 1996 and 2002 when replacing their compressors. People who claim "explosive" know nothing about combustion. All refrigerant leaks burn since the oil spray is flammable, and new ones produce toxic gases like phosgene or HF acid. A Duracool can is only 6 oz and feels empty, and only 2 cans fills most cars. Carrying a newspaper in the cabin should be more fearful. No fire reported after decades of millions of cars using it. HC has been used in home refrigerators in Europe for decades, and now in U.S. ones.