| In its gaseous and liquid states, refrigerant gas is colorless, like water. This substance is invisible when gaseous. Only the interface between the gas and the liquid is visible. (level of liquid in the ascending tube of the filling cylinder or bubbles in the window). In the window, liquid R134a refrigerant gas may take on a milky color. This cloudiness comes from the partially released refrigerant gas oil and does not mean there is any kind of problem. |
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