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UK / Europe Prius 2 Coolant Change

Discussion in 'Gen 2 Prius Technical Discussion' started by Lee Tomlinson, Aug 10, 2024.

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  1. dolj

    dolj Senior Member

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    Was the radiator full to start with?

    I got 3.8 litres out when I did mine. Never figured out why it was so little. I eventually got 3.8 L back in but initially only got 2.8 L in.
     
    #21 dolj, Aug 19, 2024 at 4:46 AM
    Last edited: Aug 19, 2024 at 7:45 AM
  2. Lee Tomlinson

    Lee Tomlinson New Member

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    I didn't check the level in the radiator actually. The tank was at the full line, but I am not sure about the radiator before I started (it is full now).

    I was also wondering whether you need to open the radiator cock and engine block at the same time. I did one and then the other. Maybe that creates an air lock or something?
     
    #22 Lee Tomlinson, Aug 19, 2024 at 4:59 AM
  3. dolj

    dolj Senior Member

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    Not sure. I did the same, I drained the majority from the radiator before opening the engine block drain. Very little came out the engine block.
     
    #23 dolj, Aug 19, 2024 at 5:02 AM
  4. Lee Tomlinson

    Lee Tomlinson New Member

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    I guess I'll try doing both drains at the same time. Also setting the heater to high temp first.

    If I can only get out 3L again, at least I've changed 3L twice. If so, I'll just wait a while and just drain the radiator a third time. That is quick and easy. Don't even need to jack up the car.

    Sure there must be a proper way to drain all 5.3L in one go, though.
     
    #24 Lee Tomlinson, Aug 19, 2024 at 7:30 AM
  5. dolj

    dolj Senior Member

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    As long as the radiator cap is off, it shouldn't make any difference.
     
    #25 dolj, Aug 19, 2024 at 7:48 AM
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  6. Lee Tomlinson

    Lee Tomlinson New Member

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    Not sure then why I only got out 3L out of the 5.3L... Unless it's because I didn't set the heater to high temp before doing the drain
     
    #26 Lee Tomlinson, Aug 19, 2024 at 9:10 AM
  7. Mendel Leisk

    Mendel Leisk Senior Member

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    Worth noting: you’ll never get the specd volume, some will always hang up in knooks and crannies.

    but you shouldn’t be getting significantly less than what others are getting, following the same procedure.
     
    #27 Mendel Leisk, Aug 19, 2024 at 9:25 AM
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