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

hybrid transaxle oil replacement intervals

Discussion in 'Generation 1 Prius Discussion' started by statultra, Jul 4, 2008.

  1. statultra

    statultra uber-Senior Member

    Joined:
    Dec 6, 2005
    798
    31
    1
    Location:
    Edison,NJ
    Vehicle:
    2001 Prius
    Model:
    N/A
    how often do you change HV transaxle fluid, Type T-IV?
     
    #1 statultra, Jul 4, 2008
  2. bwilson4web

    bwilson4web BMW i3 and Model 3

    Joined:
    Nov 25, 2005
    27,660
    15,661
    0
    Location:
    Huntsville AL
    Vehicle:
    2018 Tesla Model 3
    Model:
    Prime Plus
    I have switched to Type WS and change it on an accelerated schedule to monitor wear materials. However, it looks like I can switch to a once every other year, about 30k mile, interval.

    The Type T-IV looks to need changing between 15-30k miles due to a loss of viscosity. There is a sticky with the transaxle oil study data.

    Bob Wilson
     
    #2 bwilson4web, Jul 4, 2008
  3. FireEngineer

    FireEngineer Active Member

    Joined:
    Oct 6, 2004
    1,247
    124
    0
    Location:
    SW-Side of Chicago, IL
    Vehicle:
    2010 Prius
    Model:
    IV
    Remember the Type T-IV should only be used in the 2001-2003 Prius. From 2004-on it's strictly Type WS.

    Wayne
     
    #3 FireEngineer, Jul 4, 2008
  4. patsparks

    patsparks An Aussie perspective

    Joined:
    Jul 12, 2007
    10,664
    567
    0
    Location:
    Adelaide South Australia
    Vehicle:
    2004 Prius
    Model:
    N/A
    The WS oil is under $50 at Toyota dealers. I did mine at 80,000km and will do another change at 160,000km, that is 50,000 mile intervals for no reason but I think I should.
     
    #4 patsparks, Jul 4, 2008
  5. statultra

    statultra uber-Senior Member

    Joined:
    Dec 6, 2005
    798
    31
    1
    Location:
    Edison,NJ
    Vehicle:
    2001 Prius
    Model:
    N/A
    WS works on the 01-03 prius?

    i have used Type T-IV on one of my 01 priuses, any dangerous with going to WS? i have like 6 quarts of the WS in my garage so that would be great
     
    #5 statultra, Jul 5, 2008
  6. bwilson4web

    bwilson4web BMW i3 and Model 3

    Joined:
    Nov 25, 2005
    27,660
    15,661
    0
    Location:
    Huntsville AL
    Vehicle:
    2018 Tesla Model 3
    Model:
    Prime Plus
    It remains an experimental technique until I get another oil sample tested.

    Bob Wilson
     
    #6 bwilson4web, Jul 5, 2008
  7. FL_Prius_Driver

    FL_Prius_Driver Senior Member

    Joined:
    Jun 17, 2007
    4,319
    1,527
    0
    Location:
    Tampa Bay
    Vehicle:
    2010 Prius
    Model:
    I
    Well, I'm running the same "experiment" on my 2001 as of two months ago.
     
    #7 FL_Prius_Driver, Jul 5, 2008
  8. krousdb

    krousdb NX-74205

    Joined:
    Jul 16, 2005
    580
    500
    47
    Location:
    Raleigh, NC
    Vehicle:
    2016 Prius
    Model:
    Two
    130k with no ill effects.
     
    #8 krousdb, Jul 5, 2008
(You must log in or sign up to post here.)