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Dirty coolant dipstick (yellow sludge)

Discussion in 'VF Holden Commodore (2013 - 2017)' started by VFSSBlackLS3, Dec 29, 2018.

  1. vc commodore

    vc commodore Well-Known Member

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    Ford Radiators from AU to BF I think had a big issue with this occurring....I've even seen Hyundais do it as well.

    Anyways, with the issue facing the OP, I seriously doubt this would be the problem....Trans fluid mixed with coolant doesn't normally turn yellow
     
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  2. Skylarking

    Skylarking Well-Known Member

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    My MSE with < 2000 kms and 15 months since it was built looks just like @chrisp above.
     
  3. Ron Burgundy

    Ron Burgundy Well-Known Member

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    The smallest leak of coolant can cause this. I read that dexcool does not like oxygen and tends to go sludgee a bit in contact with air...

    My car had similar buildup on the coolant dipstick in the first year. I discovered tiny coolant leak on the o ring on the crossover pipe. Negligible stuff.

    Holden replaced the o ring and yellow stuff never built up again in 12 months...

    I never had any sludge anywhere else...
    It could be that this only forms in the overflow bottle as it is not air tight...
     
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  4. Skylarking

    Skylarking Well-Known Member

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    Ah, I get it... Holden doesn’t want us to check our coolant levels :p
     
  5. immortality

    immortality Can't live without smoky bacon! Staff Member

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    I'm fairly sure that exact problem was part of the class action lawsuit talked about earlier in this thread. Seems the dexcool formulation probably hasn't been sorted....
     
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  6. tml678

    tml678 Well-Known Member

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    Yep, google 'ford transmission milkshake'....
     
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  7. vc commodore

    vc commodore Well-Known Member

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    Seen plenty, without googling...:) Just can't remember when the problem was sorted, if at all
     
  8. tml678

    tml678 Well-Known Member

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    From memory BFII had something revised in the transmission which sorted it, could be wrong though..
     
  9. vc commodore

    vc commodore Well-Known Member

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    I honestly can't remember myself, but I'm sure it was revised with the cooler located in the radiator....Then again, you're probably like me, can't remember a lot of things like this :)
     
  10. Ron Burgundy

    Ron Burgundy Well-Known Member

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    I had my car serviced today and noticed a bit of yellow build up on overflow hose and in overflow bottle.

    I flushed it out and toped with clean dexcool.
    Funny thing is that the inside of overflow hose has significant buildup of crap.

    This really confirm that dexcool still has issues with air and it tends to sludge.

    I am thinking of flushing the entire cooling system and replacing with a different coolant.

    The car done 45 000km

    I am just not sure which to use. I was looking into penrite stuff...Their red coolant
     

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    Last edited: May 22, 2020
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  11. Skylarking

    Skylarking Well-Known Member

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    @Ron Burgundy the coolant would have done less service than the kms indicate as it should have been changed when they replaced your engine :rolleyes: should have been changed o_O

    In any case it shouldn’t be slugging up and if it is, this should it be covered by the engine warranty :D
     
  12. Milo 6.0

    Milo 6.0 Active Member

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    They may have put fresh coolant in and not touched the overflow.
    Might check mine tomorrow after reading this,mine has dexcool in it.
     
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  13. Ron Burgundy

    Ron Burgundy Well-Known Member

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    Radiator is clean. This buildup is only in the overflow bottle/hose
     
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  14. Ron Burgundy

    Ron Burgundy Well-Known Member

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    I agree. Doubt they would touch the overflow bottle
     
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  15. Skylarking

    Skylarking Well-Known Member

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    In my OCD world, if one doesn’t replace the fluid in the overflow bottle then it’s not a full flush :p

    Just hope the slim doesn’t get sucked back into the system proper and start some reaction :eek:
     
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  16. figjam

    figjam Donating Member

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    That was due to the heat exchanger bolted to the block, where badly maintained radiator systems would corrode the heat exchanger allowing the coolant and auto trans fluid to mingle.
    So many Falcon and Territory owners, including me, got rid of the heat exchanger and fitted an air-cooled transmission cooler so that the milkshakes were not a pending problem.
     
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  17. lobbie

    lobbie Member

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    Hi ron i have been using the penrite coolant in my ve all seems good with it. Thinking of using it in my vf next service
     
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  18. Ron Burgundy

    Ron Burgundy Well-Known Member

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  19. Skylarking

    Skylarking Well-Known Member

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    I’m too scared to look Ron o_O
     
  20. Ron Burgundy

    Ron Burgundy Well-Known Member

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    Hahahahhah come on. You can do it cuz
     

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