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Thread: Coolant

  1. #1
    Join Date
    May 2023
    Location
    Front Range, CO, USA
    Posts
    6
    My Cars
    1999 328i convertible

    Coolant

    I need to top off and the coolant color is green. Pelican parts shows blue for the e36. No idea what coolant is in there now. Should I assume itís just plain old green coolant? Does it need changing? Car had a pump done by previous owner but not sure what coolant they put in.

  2. #2
    Join Date
    Dec 2020
    Location
    Maitland, FL
    Posts
    108
    My Cars
    2001 330Ci, 1998 328is
    If itís just a top-off, use distilled water.

  3. #3
    Join Date
    Jun 2010
    Location
    NY
    Posts
    9,098
    My Cars
    1997 328i
    How long ago was the pump changed? If its more than 3 years its time to drain the system and put fresh. Coolant will get acidic and eat away at metal and won't protect as intended. You can use BMW or Fuches blue, zerex g05 or g48 if you want to stay in BMW's specs. You want to drain all the old fluid so that means pulling the block drain which is above the front o2 sensor. Its messy pulling that plug, so be prepared and its wise to hoses off the area that gets coolant sprayed on cause it may be acidic. After draining it thoroughly technically you can put whatever coolant you want 50/50.
    Attn. NEWBIES: Use the search feature, 98% has already been discussed.
    Click the search button, select "search single content type", select the "e36 sub forum" specifically, try the "search titles" then try the "search entire posts".

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