Engine/inverter coolant is two different systems?

Discussion in 'Gen 3 Prius Care, Maintenance & Troubleshooting' started by us_matrix, Aug 26, 2015.

  1. us_matrix

    us_matrix Member

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    My 2010 Prius just reached 100k miles and the book said replace engine/inverter coolant. Does anyone know engine and inverter is two different systems? Dealer is going to charge 2 different services? For my other non-hybrid car, all I have to do is just replace engine coolant.
     
    #1 us_matrix, Aug 26, 2015
  2. Mendel Leisk

    Mendel Leisk MMX GEN III

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    Yeah there's two systems. In the US schedule there's a tricky footnote, which if you follow it I believe says to change engine coolant at 100k miles (or 120 months), but inverter coolant at 150k miles (or 180 months).

    From page 50:

    Capture.JPG

    And the footnote, on page 51:

    Capture.JPG

    FWIW, Canadian Schedule makes no distinction, says to change both at the engine coolant interval, I believe the same (albeit in km's) as US.
     
    #2 Mendel Leisk, Aug 26, 2015
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