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Thread: Transmission fluid dexron II ?

  1. #1
    Join Date
    Oct 2004
    Location
    Bay Area, CA
    Posts
    261

    Default Transmission fluid dexron II ?

    Hey guys, my inspection is due and part of it is the atf change.

    I can not find the Dexron II anywhere, but I am assuming that Dexron III is what I use because Dexron II is no-more.

    Is Dexron III what I need to use now? is it basically II with added enhancements / higher standards?

    Thanks a bunch guys.

    edit: just out of curiosity, where can I find the differential oil? What weight do I use for that thing?

  2. #2
    Join Date
    Jan 2004
    Posts
    348

    Default Yes, Dexron III is what you need - it is the upgrade &

    I use Mobil One 75w-90 synthetic gear oil in the differential. It can be found at any auto parts store, like Autozone, or any auto parts section of a large dept. store.

    Quote Originally Posted by Hypr5
    Hey guys, my inspection is due and part of it is the atf change.

    I can not find the Dexron II anywhere, but I am assuming that Dexron III is what I use because Dexron II is no-more.

    Is Dexron III what I need to use now? is it basically II with added enhancements / higher standards?

    Thanks a bunch guys.

    edit: just out of curiosity, where can I find the differential oil? What weight do I use for that thing?

  3. #3
    Join Date
    Oct 2004
    Location
    Bay Area, CA
    Posts
    261

    Default

    thanks.

    I finally found the car's instruction book - but noticed that it said Hypoid gear oil... the only "hypoid" oil I've found in 75w90 is $155.00 for 32 oz. While all the synthetics are about $6 / qt. Wtf is the deal with that!? :eek: :confused

    Does it have to be "hypoid" ?

  4. #4
    Join Date
    Jan 2004
    Posts
    1,171

    Default

    maybe that stuff have diamond dust in it??? Most enthusiasts on this forum run either conventional...likely in the minority...diff lube or either Redline, Amsoil or Mobil 1 synthetic differential fluid which also works great for LSD rear ends.. I like Mobil 1 personally but the other two are excellent if not better.
    And as Dick said, run Dextron III in your trans if you were spec'ed for Dextron II. III didn't exist when these cars were manufactured.
    HTH,
    George

  5. #5
    Join Date
    Oct 2004
    Location
    Bay Area, CA
    Posts
    261

    Default

    Hey guys on my zf tranny, can I just refill it through the dipstick hole or do I have to pump the fluid through the filler hole?

    Thanks a bunch

  6. #6
    Join Date
    Jan 2005
    Posts
    44

    Default

    dexron III is the replacement for dexron II so the III is better and yes you fill through the dip stick
    1989 e34 520i se, red, mint condition (original)
    pro mechanic "all cars"

  7. #7
    Join Date
    Feb 2004
    Location
    Minnesota
    Posts
    499

    Default

    Remember that if you have a limited slip differential (LSD), it has a S on the differential tag, you might need fluid designated for LSD, it has some kind of additive in it. I use the synthetic diff fluid.

  8. #8
    Join Date
    Jan 2005
    Posts
    44

    Default

    the story is about the auto gerbox init the dif was thrown in later so for the gearbox use atf III and for the dif use what the book says with a touch of molly slip it smoothes the transaction out so lets not confuse the gearbox with the diff eh
    1989 e34 520i se, red, mint condition (original)
    pro mechanic "all cars"

  9. #9
    Join Date
    Dec 2003
    Location
    Eastern Tennessee USi
    Posts
    14,839

    Default

    LSD takes the thicker gear lube, 85w140? Think thats the numbers.
    95 E34 530I V2.37
    ===========
    Those who make peaceful revolution impossible will make violent revolution inevitable.

    John F. Kennedy

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