1. Attachments are working again! Check out this thread for more details and to report any other bugs.

Trans oil questions ( I know it's been talked to death)

Discussion in 'Gen 3 Prius Care, Maintenance & Troubleshooting' started by xerox6135, Sep 7, 2016.

  1. xerox6135

    xerox6135 Member

    Joined:
    Apr 10, 2012
    170
    93
    0
    Location:
    michigan
    Vehicle:
    2013 Prius
    Model:
    Persona
    I have seen oil out of these gear boxes with 1,000 miles on it and the fluild is as dark as mine at 35,000 miles. So I guess my question is does Toyota use a different darker oil than what we are buying front the dealership.

    Posted via the PriusChat mobile app.
     
    #1 xerox6135, Sep 7, 2016
  2. DonDNH

    DonDNH Senior Member

    Joined:
    Feb 3, 2004
    1,711
    654
    0
    Location:
    Nashua, NH
    Vehicle:
    2016 Prius
    Model:
    Four Touring
    Perhaps there is an additive that darkens the fluid that results in Toyota's "lifetime" claim.
     
    #2 DonDNH, Sep 7, 2016
  3. tankyuong

    tankyuong Senior Member

    Joined:
    Nov 9, 2012
    1,555
    660
    0
    Location:
    Central MO
    Vehicle:
    2012 Prius c
    Model:
    II
    same
     
    #3 tankyuong, Sep 7, 2016
  4. jdenenberg

    jdenenberg EE Professor

    Joined:
    Nov 21, 2005
    3,842
    1,830
    1
    Location:
    Trumbull, CT
    Vehicle:
    2020 Prius
    Model:
    LE AWD-e
    My lab tests on Toyota WS ATF showed that there is an initial leaching of silicates into the ATF from the gaskets/sealants. Perhaps this is what darkens the ATF that we see in low mileage OE ATF samples.

    JeffD
     
    #4 jdenenberg, Sep 7, 2016
    Rebound likes this.
  5. exstudent

    exstudent Senior Member

    Joined:
    Jul 11, 2009
    2,212
    900
    0
    Location:
    Torrance, CA
    Vehicle:
    2007 Prius
    #5 exstudent, Sep 7, 2016
  6. xerox6135

    xerox6135 Member

    Joined:
    Apr 10, 2012
    170
    93
    0
    Location:
    michigan
    Vehicle:
    2013 Prius
    Model:
    Persona
    Thanks for all the reply s I knew you would have the answers

    Posted via the PriusChat mobile app.
     
    #6 xerox6135, Sep 7, 2016
  7. grnd0

    grnd0 Member

    Joined:
    Mar 26, 2016
    42
    26
    0
    Location:
    Florida
    Vehicle:
    2010 Prius
    Model:
    II
    I just did mine 2 weeks ago and old fluid looked really bad, at 52,000 miles. Got my WS on ebay.
     
    #7 grnd0, Sep 7, 2016
  8. grnd0

    grnd0 Member

    Joined:
    Mar 26, 2016
    42
    26
    0
    Location:
    Florida
    Vehicle:
    2010 Prius
    Model:
    II
    Forgot, price for 4 quarts was $30 shipped.
     
    #8 grnd0, Sep 7, 2016
    tankyuong likes this.
  9. xerox6135

    xerox6135 Member

    Joined:
    Apr 10, 2012
    170
    93
    0
    Location:
    michigan
    Vehicle:
    2013 Prius
    Model:
    Persona
    Did mine at 36,000 looked very dark. Pulled a 2016 Prius out of the ditch with the wrecker and the oil leaking out was the same dark oil that was in mine just the 2016 only had 1,000 miles on it. Now I know color doesn't matter it's what the oil analyzation says. Different from a regular automatic trans because of no clutch material being in the oil

    Posted via the PriusChat mobile app.
     
    #9 xerox6135, Sep 7, 2016
    bisco likes this.
  10. David Beale

    David Beale Senior Member

    Joined:
    Jul 24, 2006
    5,963
    1,981
    0
    Location:
    Edmonton Alberta
    Vehicle:
    2012 Prius
    Actually there IS a single plate "clutch" in there. It just stays "engaged" (or should that be "released"?). Over-torque prevention device.
     
    #10 David Beale, Sep 7, 2016
  11. StarCaller

    StarCaller Senior Member

    Joined:
    Feb 15, 2014
    1,240
    692
    0
    Location:
    Cedar Crest, NM, USA
    Vehicle:
    2014 Prius
    Model:
    Two
    link?
     
    #11 StarCaller, Sep 7, 2016
  12. Mendel Leisk

    Mendel Leisk Senior Member

    Joined:
    Oct 17, 2010
    54,907
    38,356
    80
    Location:
    Greater Vancouver, British Columbia, Canada
    Vehicle:
    2010 Prius
    Model:
    Touring
    I changed mine around 15,000 kms and first year, found it quite dark. I did a second change around 40,000 km and third year: it looked still very clean, not that different than the new fluid.
     
    #12 Mendel Leisk, Sep 8, 2016
    jdcollins5 likes this.
(You must log in or sign up to post here.)