AC r12 or r134a?

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  • ziazhp
    Advanced Member
    • Nov 2015
    • 191

    #1

    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
  • roguetoaster
    R3V OG
    • Jan 2012
    • 7773

    #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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