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Disposable refrigerant containers are only used for virgin refrigerant.
I always used Rotella T on my 300SD. I used it exclusively as a truck driver.
coralicigal
Your condensor outside , where the compressor is . should have an information plate showing the type of refrigerant used
R134a
134a
R134a
R 134 a
r134
r-134a
R134a
r134