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Thread: PAG Oil in AC Compressor

  1. #1
    Join Date
    Dec 2005
    Location
    Milwaukee
    Posts
    103

    Default PAG Oil in AC Compressor

    Getting ready to tackle the air conditioning job. I have done a few "dry runs" and believe I am ready for the task.

    I called Patrick at BMA per suggestions of the board and he is recomending a replacement compressor for the Denso at about $100 cheaper.

    However, it needs to have PAG oil put in and he wasn't sure what viscosity the Denso or this compressor is suppose to use. I did a search and found a link to a listing for viscosity for compressors but the link didn't work. I called the BMW dealer and they said they used PAG oil from Mercedes (dual dealership) because it was much cheaper but couldn't (wouldn't?) tell me what the viscosity was.

    Any help would be appreciated.
    94 E34 525i M50, Manual, 200,000 Miles
    02 E39 530i M54, Auto, 85,000 Miles

  2. #2
    Join Date
    Oct 2004
    Location
    Honolulu
    Posts
    3,105

    Default Check with whom your buying

    The compressor from.

    Most come prefilled with the proper oil and amount.


    Vee ave vays of dealing vid your kind...........

  3. #3
    Join Date
    Dec 2005
    Location
    Milwaukee
    Posts
    103

    Default that' why I thought...

    But Patrick seemed pretty sure it needed to be filled with oil?
    94 E34 525i M50, Manual, 200,000 Miles
    02 E39 530i M54, Auto, 85,000 Miles

  4. #4
    Join Date
    Dec 2003
    Location
    baton rouge, loserana
    Posts
    6,922

    Default

    i find that they usually don't have nearly enough oil when i drain them to check, i drain out whatever it has in it and refill with 5-6 oz of ester oil, pag is bad if you have any copper in the system, and these old systems can have some copper
    all america wants is cold beer warm cat and a place to take a poop with a door on it

  5. #5
    Join Date
    Mar 2006
    Posts
    811

    Default

    The compressor will come with documentation for what oil to use.

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