Effects on Metal

Effects on metal

In its pure state, refrigerant R-134a is chemically stable and will not attack iron, copper, brass or aluminum. However, the mixture of R-134a and PAG oil may deteriorate certain metals (copper), which could lead to blockage, leaks or deposits on the compressor piston. Therefore, when making system repairs, use only genuine VW replacement parts that are specified for use with R-134a refrigerant.