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Transmission & differential question

Discussion in 'Gen 3 Prius Care, Maintenance & Troubleshooting' started by texastoyota1939, Mar 19, 2011.

  1. texastoyota1939

    texastoyota1939 New Member

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    Does anyone have any information about checking the fluid levels and changing the fluid on 2011 Prius transmission and differential?

    Thanks
     
    #1 texastoyota1939, Mar 19, 2011
  2. jdcollins5

    jdcollins5 Senior Member

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    The Prius has a transaxle that houses the PSD including the electric motors MG1 and MG2. Search on here for transaxle fluid change. There are several threads on here along with some very good DIY instructions along with pictures showing the drain and fill plugs.
     
    #2 jdcollins5, Mar 19, 2011
  3. tumbleweed

    tumbleweed Senior Member

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    Here is one of the threads Dwight mentioned. http://priuschat.com/forums/gen-iii...ting/72896-diy-transmission-fluid-change.html

    Procedure is in post #35 along with a link to the transaxle fluid analysis thread.

    I think 20K to 30K miles is a reasonable interval.
     
    #3 tumbleweed, Mar 19, 2011
  4. jdenenberg

    jdenenberg EE Professor

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    From the ATF lab testing to date on Gen2 Prii, a first Drain and Refill of the Toyota Type WS ATF at 30k miles is appropriate. You can then safely extend the interval to 60k miles thereafter. See the attached test results if you want to see why. The four columns are:

    1. 180k miles - Cleaner yet, on could consider extending the interval further. :mod:
    2. 120k miles - Much cleaner. :)
    3. 60k miles - Note the high metallic content, the silicates are probably due to sealants used in the manufacturing process. The viscosity index is marginal at best. :eek:
    4. Virgin type WS ATF - Very Clean ;)
    JeffD
     

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    #4 jdenenberg, Mar 20, 2011
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