Checking quality of coolant

Discussion in 'Gen 2 Prius Care, Maintenance and Troubleshooting' started by Caleb302105, Mar 10, 2015.

  1. Caleb302105

    Caleb302105 Junior Member

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    Hello, I'm wondering if there is anyway to test the effectiveness or quality of the engine or inverter coolant. I can't seem to find anything online for testing Toyota SLLC.

    Thanks for your help.
     
    #1 Caleb302105, Mar 10, 2015
  2. JC91006

    JC91006 Senior Member

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    It's a safe bet to change it out based on mileage. 100k miles and then every 50k afterwards. This is in the owners manual
     
    #2 JC91006, Mar 10, 2015
  3. Caleb302105

    Caleb302105 Junior Member

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    I was able to pull my service history and found that the inverter coolant had been changed at 60,000 miles in 2012 due to a recall with the inverter coolant pump. The car is now at 90,000 miles. I'll assume that based upon that information I will be able to wait a bit longer before having it replaced.

    I already replaced the ICE coolant when I had to do the coolant storage tank control valve replacement.

    I appreciate your time and thoughts on this matter. :)
     
    #3 Caleb302105, Mar 10, 2015
  4. RobertK

    RobertK Member

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    Don't assume that the inverter coolant was changed when the inverter pump was replaced, even if the documentation says it happened. The procedure calls for replacement of the fluid, but it is quicker to clamp off the hoses, change the pump, and top off the system. Most dealer mechanics will do whatever is quickest, since they are being paid a flat rate per job.

    My inverter pump was replaced, and I'll change the coolant at 100K miles.
     
    #4 RobertK, Mar 10, 2015
    Mendel Leisk likes this.
  5. Caleb302105

    Caleb302105 Junior Member

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    Alright,

    Thank you.

    I'll keep an eye on it. ;)
     
    #5 Caleb302105, Mar 10, 2015
  6. bisco

    bisco cookie crumbler

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    consider your ice water pump and serpentine belt when you change the ice coolant.
     
    #6 bisco, Mar 10, 2015
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