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Cummins ISX oil leak at startup

Discussion in 'Experienced Truckers' Advice' started by JohnSmith69, Nov 22, 2020.

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  1. Nov 22, 2020 #1
    JohnSmith69

    JohnSmith69 Light Load Member

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    I have a 2012 Freightliner Cascadia with a Cummins ISX and I get a small puddle when I start the motor. Any ideas? Oil cooler needs to be resealed? And how much do you think that'll cost me in terms of hours, etc. Thank you
     
    JohnSmith69, Nov 22, 2020
    JohnSmith69, Nov 22, 2020
    #1
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  3. Nov 22, 2020 #2
    Dave_in_AZ

    Dave_in_AZ Road Train Member

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    Where is the leak?

    How many miles?

    They tend to leak every which way after awhile.

    I have the same truck / engine.
     
    Dave_in_AZ, Nov 22, 2020
    Dave_in_AZ, Nov 22, 2020
    #2
    JohnSmith69 Thanks this.
  4. Nov 22, 2020 #3
    JohnSmith69

    JohnSmith69 Light Load Member

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    I think it's the front cover, I have 530k miles. This truck has been a God #### nightmare since the day I bought it.
     
    JohnSmith69, Nov 22, 2020
    JohnSmith69, Nov 22, 2020
    #3
  5. Nov 22, 2020 #4
    Dave_in_AZ

    Dave_in_AZ Road Train Member

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    The front cover is the gear housing.

    Probably $6000ish at Cummins.
     
    Dave_in_AZ, Nov 22, 2020
    Dave_in_AZ, Nov 22, 2020
    #4
  7. Nov 22, 2020 #5
    Dave_in_AZ

    Dave_in_AZ Road Train Member

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    The guys at the Detroit/Volvo house in Panama City, FL will do it for about $3500.
     
    Dave_in_AZ, Nov 22, 2020
    Dave_in_AZ, Nov 22, 2020
    #5
  8. Nov 22, 2020 #6
    snowwy

    snowwy Road Train Member

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    If it's the same design motor I had. 05. The front cover warps around the oil pan area.

    Replacement was $3500 10 years ago from an independent shop.

    If you use the right oil. They leak out of just about every gasket.

    If you use the right oil. They don't leak. Mine had a sticker on the frame. Mobil

    I found mobile delvac and delo 400 to be the best oils for that motor.

    Anything else and the motor leaks. Sounds like a tank. And would run hot if the oil was crappy enough.

    That motor had 1.3M miles on it though.

    You've got a newer motor. Supposedly improved from what I had.
     
    snowwy, Nov 22, 2020
    snowwy, Nov 22, 2020
    #6
  9. Nov 22, 2020 #7
    Dave_in_AZ

    Dave_in_AZ Road Train Member

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    I use Delvac.
     
    Dave_in_AZ, Nov 22, 2020
    Dave_in_AZ, Nov 22, 2020
    #7
  10. Nov 23, 2020 #8
    AKDoug

    AKDoug Medium Load Member

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    I might try that. We're pulling our '05 off the road tomorrow and it leaks like a sieve. It will be used for yard work and local less than 15 mile runs. I'll throw in some Delvac to see if it slows it down.
     
    AKDoug, Nov 23, 2020
    AKDoug, Nov 23, 2020
    #8
  11. Nov 23, 2020 #9
    JohnSmith69

    JohnSmith69 Light Load Member

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    Is this something I have to fix immediately or can I kick this can down the road?
     
    JohnSmith69, Nov 23, 2020
    JohnSmith69, Nov 23, 2020
    #9
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