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Coolant test for acidity

Discussion in '2.5 Gen Tundras (2014-2021)' started by dadtrucklife, Apr 16, 2025.

  1. Apr 16, 2025 at 9:14 AM
    #1
    dadtrucklife

    dadtrucklife [OP] New Member

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    2021 SR5 TRDOR 4x4 (Army Green)
    Does anyone regularly test the acidic level of their coolant with PH strips?

    I’m at 35k and 4 years and plan to change the coolant at 50k or 5 years (based on Car Care Nut’s recommendation) but I’m curious of the condition of the coolant today.
     
    Last edited: Apr 16, 2025
  2. Apr 16, 2025 at 9:20 AM
    #2
    coldcanuk

    coldcanuk New Member

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    Just changed mine and I did the radiator and the passenger side engine drain. I've seen a few videos where the driver's side engine drain doesn't have much and is a pain to get to? I also attached a hose to the engine drain so that the coolant didn't splash all over the bottom side. Never believe Toyota/Lexus maintenance drain intervals for any fluid if you want to keep your vehicle for a long time. Car Care Nut also did a video on changing your coolant more often than 10 years. 10 years is plain silly.
     
    Last edited: Apr 17, 2025
    dadtrucklife[OP] likes this.
  3. Apr 16, 2025 at 3:00 PM
    #3
    1UP

    1UP Truck Gang

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    My 2019 has 51k miles and will be flushed tomorrow when the oil is changed. I didn't ck the acidity, but in the original post lots off ppl were checking theirs and I don't remember anyone having a crazy high finding.
     
  4. Apr 16, 2025 at 4:37 PM
    #4
    Tunrod

    Tunrod New Member

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    Trans cooler, CatShield, TRD RSB, air bags, ScangaugeII, K02's, F/R Dashcam, Borla Exhaust
    Not regularly but after CCN's video alarm bells went off because I have never changed the coolant in my 2015 2GR Camry at around 149k and she cools with the same pink stuff as the Tundra.
    I tested and it was good but changed it out anyways. She was a road warrior doing 800 miles weekly at the time. I heard vehicles that are driven short distances or not warmed up to operating temp are more prone to acid buildup.

    20240913_122941.jpg
     
    Last edited: Apr 26, 2025 at 10:28 AM

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