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AC r12 or r134a?

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    AC r12 or r134a?

    Is there a simple way to determine if my car was converted to r134a?
    '89 325ix
    '88 M6 Royal Blue
    '13 128i "M-Sport"
    '04 ZHP Mystic Blue-SOLD
    '02 E46 330xi-SOLD
    '89 325i Laachssilber metallic-SOLD
    '89 325i Bronzit-SOLD

    #2
    If it has large fittings, maybe 15mm it's probably been converted. You can also look for stickers in the engine bay or on the expansion valve.

    Most E30s also got the single wire pressure switch (at the drier) conversion at the same time.

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