Transmission fluid change 50k miles

Discussion in 'Prius c Care, Maintenance and Troubleshooting' started by iceman13, Jul 1, 2018.

  1. iceman13

    iceman13 Member

    Joined:
    Feb 15, 2017
    134
    101
    0
    Location:
    US
    Vehicle:
    2014 Prius c
    Model:
    Three
    Do I have something to worry if I change my transmission oil now at 50k miles since it hasn’t been changed ever? As many of you know it’s common knowledge that changing the trans oil at higher mileage when it has never been done can cause problems in normal automatic transmissions.
     
  2. Raytheeagle

    Raytheeagle Senior Member

    Joined:
    Jul 1, 2016
    11,215
    15,358
    0
    Location:
    Bay Area, California
    Vehicle:
    2019 Prius Prime
    Model:
    Prime Plus
    Nope, change away;).

    I waited to change our 2010 Prius II’s until 140 k miles, and wished I would have done it sooner.

    As you know, this is not a normal transmission, so no issues:).

    Good luck with your fluid drain and fill(y).
     
    JC91006, Mendel Leisk and iceman13 like this.
  3. iceman13

    iceman13 Member

    Joined:
    Feb 15, 2017
    134
    101
    0
    Location:
    US
    Vehicle:
    2014 Prius c
    Model:
    Three
    Thanks!
     
    Raytheeagle likes this.
  4. JC91006

    JC91006 Senior Member

    Joined:
    Nov 10, 2013
    15,105
    7,749
    0
    Location:
    Los Angeles, CA
    Vehicle:
    2010 Prius
    Model:
    V
    I changed for the first time at 170k miles.....I'm at 171k miles now and I'll let you know if it fails
     
    iceman13 and Raytheeagle like this.
  5. Raytheeagle

    Raytheeagle Senior Member

    Joined:
    Jul 1, 2016
    11,215
    15,358
    0
    Location:
    Bay Area, California
    Vehicle:
    2019 Prius Prime
    Model:
    Prime Plus
    It have any odors or a color other than black:whistle:?
     
  6. JC91006

    JC91006 Senior Member

    Joined:
    Nov 10, 2013
    15,105
    7,749
    0
    Location:
    Los Angeles, CA
    Vehicle:
    2010 Prius
    Model:
    V
    No odors, just some air gets released. Not sure where the air comes from.

    Black is about the only color.......
     
    Raytheeagle likes this.
  7. iceman13

    iceman13 Member

    Joined:
    Feb 15, 2017
    134
    101
    0
    Location:
    US
    Vehicle:
    2014 Prius c
    Model:
    Three
    Wow! Air released... That is interesting
     
  8. Raytheeagle

    Raytheeagle Senior Member

    Joined:
    Jul 1, 2016
    11,215
    15,358
    0
    Location:
    Bay Area, California
    Vehicle:
    2019 Prius Prime
    Model:
    Prime Plus
    Ours at 140 was black. Ran fine for the next 33 k miles until I drained and filled again.

    That was purple upon exit :).

    Next change will be around 220 k miles and hopefully in the same condition (y).
     
  9. JC91006

    JC91006 Senior Member

    Joined:
    Nov 10, 2013
    15,105
    7,749
    0
    Location:
    Los Angeles, CA
    Vehicle:
    2010 Prius
    Model:
    V
    This has occurred before on a different high mileage change. Air comes out when you open the drain plug
     
    Raytheeagle and iceman13 like this.
  10. Raytheeagle

    Raytheeagle Senior Member

    Joined:
    Jul 1, 2016
    11,215
    15,358
    0
    Location:
    Bay Area, California
    Vehicle:
    2019 Prius Prime
    Model:
    Prime Plus
    I don’t remember that, other than depending on how you drain (leave the fill plug in or not).

    I drop the fill plug first then drain away;).

    Don’t forget to crack the fill bolt first just in case it doesn’t want to release(y).
     
    JC91006 and iceman13 like this.
  11. JC91006

    JC91006 Senior Member

    Joined:
    Nov 10, 2013
    15,105
    7,749
    0
    Location:
    Los Angeles, CA
    Vehicle:
    2010 Prius
    Model:
    V
    Some have suggested every 60k miles would be a good interval
     
    orenji and Raytheeagle like this.
  12. Raytheeagle

    Raytheeagle Senior Member

    Joined:
    Jul 1, 2016
    11,215
    15,358
    0
    Location:
    Bay Area, California
    Vehicle:
    2019 Prius Prime
    Model:
    Prime Plus
    Another suggestion was to change early.

    Did the RX450h At 6800 miles and it was purple:).

    They have a magnetic drain plug on the front differential and it had some fillings in it:(.

    But got it out of the way and ready for 60 k miles change(y).
     
    padroo and JC91006 like this.
  13. padroo

    padroo Senior Member

    Joined:
    Jan 11, 2008
    2,763
    2,243
    13
    Location:
    Chesterton, Indiana Another third world country.
    Vehicle:
    2016 Prius
    Model:
    Four
    The Prius transmission is more like a gearbox than an automatic transmission. The fluid is just there for lubrication and cooling more like a standard transmission.
     
    iceman13, JC91006 and Raytheeagle like this.
  14. Mendel Leisk

    Mendel Leisk Sand Pounder

    Joined:
    Oct 17, 2010
    45,964
    32,824
    80
    Location:
    Greater Vancouver, British Columbia, Canada
    Vehicle:
    2010 Prius
    Model:
    Touring
    Just my 2 cents: change it at one year mark or 10K miles, whichever comes last. Then stretch them out, say addlitional 30K, 60K, and so on.
     
    padroo, Raytheeagle and JC91006 like this.
  15. orenji

    orenji Senior Member

    Joined:
    Aug 17, 2013
    5,871
    3,467
    0
    Vehicle:
    2010 Prius
    Model:
    Three
    60k is a good number, sooner is better.
     
    Raytheeagle likes this.
  16. Mendel Leisk

    Mendel Leisk Sand Pounder

    Joined:
    Oct 17, 2010
    45,964
    32,824
    80
    Location:
    Greater Vancouver, British Columbia, Canada
    Vehicle:
    2010 Prius
    Model:
    Touring
    I've done 3 changes:

    15K (kms) <by far the darkest drained fluid
    40K <marginally darker
    65K <very clean, don't think I'll be doing any more, for a long time
     
    Raytheeagle likes this.
Loading...