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Frothy Transmission oil

Discussion in 'Experienced Truckers' Advice' started by RepoweredRookie, May 7, 2023.

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  1. May 7, 2023 #1
    RepoweredRookie

    RepoweredRookie Light Load Member

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    Was checking the trans oil and it appears frothy like really melted ice cream. I changred the trans oil approx 40K miles ago, and I filled until it started running out the hole.

    1999 Freightliner Century 12.7 S60 with Rockwell-Meritor trans 10 speed.

    Thanks for any info.
     
    RepoweredRookie, May 7, 2023
    RepoweredRookie, May 7, 2023
    #1
    singlescrewshaker Thanks this.
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  3. May 7, 2023 #2
    Diesel Dave

    Diesel Dave Last Few of the OUTLAWS

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    Have you been losing coolant ?
     
    Diesel Dave, May 7, 2023
    Diesel Dave, May 7, 2023
    #2
    singlescrewshaker, RepoweredRookie and Big Road Skateboard Thank this.
  4. May 7, 2023 #3
    AModelCat

    AModelCat Road Train Member

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    Sounds like your transmission cooler is toast.

    Best fix it ASAP, that coolant can apparently destroy the friction material on the synchro.
     
    AModelCat, May 7, 2023
    AModelCat, May 7, 2023
    #3
    singlescrewshaker, High Stepper, Big Road Skateboard and 1 other person Thank this.
  5. May 7, 2023 #4
    Diesel Dave

    Diesel Dave Last Few of the OUTLAWS

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    Exactly what happened to mine.
     
    Diesel Dave, May 7, 2023
    Diesel Dave, May 7, 2023
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    singlescrewshaker, AModelCat and Big Road Skateboard Thank this.
  7. May 7, 2023 #5
    Big Road Skateboard

    Big Road Skateboard Road Train Member

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    And go with an air cooler, lose the coolant one. This gauge is correct
    20230507_173646.jpg
     
    Big Road Skateboard, May 7, 2023
    Big Road Skateboard, May 7, 2023
    #5
    singlescrewshaker, High Stepper and RepoweredRookie Thank this.
  8. May 7, 2023 #6
    RepoweredRookie

    RepoweredRookie Light Load Member

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    No, I don’t think so. But I will be posting pics below. I think you helped me figure it out.
     
    RepoweredRookie, May 7, 2023
    RepoweredRookie, May 7, 2023
    #6
    singlescrewshaker and Diesel Dave Thank this.
  9. May 7, 2023 #7
    RepoweredRookie

    RepoweredRookie Light Load Member

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    Posting 2 picks, front and back of cooler. Backside is pretty clean, front if cakes in grime. Thanks for making me take a closer look.
     

    Attached Files:

    RepoweredRookie, May 7, 2023
    RepoweredRookie, May 7, 2023
    #7
    singlescrewshaker Thanks this.
  10. May 7, 2023 #8
    RepoweredRookie

    RepoweredRookie Light Load Member

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    Front of cooler covered in grime. I usually degrease it 3-4 times a year really good. I think I started slacking.
     

    Attached Files:

    RepoweredRookie, May 7, 2023
    RepoweredRookie, May 7, 2023
    #8
    singlescrewshaker Thanks this.
  11. May 7, 2023 #9
    RepoweredRookie

    RepoweredRookie Light Load Member

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    Thanks for pointing me in the right direction guys.
     
    RepoweredRookie, May 7, 2023
    RepoweredRookie, May 7, 2023
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    singlescrewshaker Thanks this.
  12. May 7, 2023 #10
    Ridgeline

    Ridgeline Road Train Member

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    Correct for what? that's too low of a temp, it should be at least 150ºF.
     
    Ridgeline, May 7, 2023
    Ridgeline, May 7, 2023
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    Bean Jr. Thanks this.
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