Help radiator flush

Discussion in 'Ask An Owner Operator' started by Rubberens, Dec 6, 2017.

  1. Rubberens

    Rubberens Bobtail Member

    10
    1
    Dec 6, 2017
    0
    I wanted to flush the radiator out but ended running into something i have no clue what it is i never seen this before , what can it be ? How can i clean the system up real good? Truck came with red antifreeze its a 95 kw t600 cat 3406 , the bottom radiator elbow was all cloggedup ,please help me out i dont want to waste alot of money on wrong parts
     

    Attached Files:

  2. Tug Toy

    Tug Toy Road Train Member

    1,413
    3,949
    Jul 4, 2015
    0
    Oh....that's not good.
     
    Justrucking2 and Hurst Thank this.
  3. Justrucking2

    Justrucking2 Medium Load Member

    698
    722
    Sep 12, 2017
    0
    Oh no... That is not good. Looks like someone mixed coolants. The water jacket in your motor may possibly look as bad. I don't think a flush is going to fix this mess. I would say a new radiator and pull the motor apart. Have you removed the thermostat yet? I would do that and see how that looks. If there is a coolant filter on there, I am not that well versed on Cat's, but there should be one on there too... If there is, pull that too and see what it looks like, normally located close to the water pump, looks like a car oil filter if it is there.
     
  4. Hurst

    Hurst Registered Member

    5,658
    9,435
    Aug 24, 2011
    Tampa, Fl
    0
    Looks like old geled up coolant. Really old.

    Either it hasnt been flushed in a long time or the truck sat for a really long time.

    I've bought old cars like this. I usually tore the motor down and flushed it out in a parts cleaner with solvent.

    Guessing that is not really an option or something you want to hear. But there is no telling how many passages are clogged, how bad the clogs are, what condition the thermostat is in. Maybe run some high pressure water through it and see how much gunk comes out.

    Thats not something I would want to see in a truck.

    Hurst
     
    nax and Justrucking2 Thank this.
  5. Rubberens

    Rubberens Bobtail Member

    10
    1
    Dec 6, 2017
    0
    Could it be a bad oil cooler? The radiator is all new with waterpump and thrmostat, well i dont think its new nomore after all the clogged up #### i found in it
     
    Roger McG Thanks this.
  6. Justrucking2

    Justrucking2 Medium Load Member

    698
    722
    Sep 12, 2017
    0
    That did not just happen, that took some time to do. I would break out the wrenches and start tearing things apart. You are not going to just flush that gunk out. Like Hurst said, it is more than likely in the cooling passages and God only knows where else.
     
  7. Rubberens

    Rubberens Bobtail Member

    10
    1
    Dec 6, 2017
    0
    The gunk wasnt there when i replaced the radiator and air cooler,, poped up after the red coolant was added then 2 months later thats when it showed up in the reservoir since the driver kept addin anti freeze due to a leak he noticed inside the reservoir looked like red hard clay
     
  8. nax

    nax Road Train Member

    1,324
    1,396
    Dec 14, 2016
    0
    YUUUUUUPP!!!

    someone mixed red/green coolant.

    Start with the coolant flush cleaner, and rinse, repeat a few times, before going crazy...
    • best case: flush & be done
    • worse case: replace radiator/water pump impeller/ hoses
    • worst case: open up block (not likely)
    PRESTONE COOLANT FLUSH.jpeg
     
    Rubberens Thanks this.
  9. Klleetrucking

    Klleetrucking Light Load Member

    271
    187
    Dec 11, 2010
    S.C.
    0
    Best answer yet. I think you might get more info on the section under "The Garage"
    Heavy Duty Diesel Truck Mechanics
     
  • Draft saved Draft deleted