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Oil in Coolant Header Tank....??

Hulmie Apr 16, 2014

  1. Hulmie

    Hulmie New Member

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    Had car for over a year now (2008 170TDI S-line SE). The cars had new oil/coolant pump supplied by the Honda Dealer when i bought it, as apparently it was bypass before that, the system was flushed 2-3 times when when i took it back and the Honda Dealer said it'll be any remaining oil within the system....??Just had it MOT'd and serviced a year on and the oil is still mixing in the coolant tank, had it flushed out again yesterday to see if it continues. The car seam to run fine, could there be an underlining issue with this, the chap who'd just serviced it said it could be a possible cracked head if the coolant doesn't clear (££££££). Does anyone have or had similair issues.Like to know what other people on think if its a cracked head is it worth hanging on to the car and forking out some cash or could it be time to move it on?
     
  2. vroomtshh

    vroomtshh Active Member VCDS Map User

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    Knackered oil cooler would be most likely
     
  3. lynallbel

    lynallbel Active Member

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    Could be oil cooler, but the old oil never truly goes away, there are various tricks, dishwasher tablet, washing machine soap or ctfr, drain system down fill with plain water add your choice of medicine, go for a run allow to cool, drain repeat until happy its all clear.
     
  4. Darren198712

    Darren198712 Member

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    Are you loosing oil? Or is there just mayo in the header bottle?
     
  5. Paul B7

    Paul B7 Active Member

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    Agreed, my money is on a failed oil cooler.
     
  6. Hulmie

    Hulmie New Member

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    thanks peeps, no oil loss and no mayo in header tank. The garage (VAG technik, Eccles) have been doing the dish tablet trick, so going back end of next week to have another flush. i'll mention the oil cooler see what they think!
     
  7. Paul B7

    Paul B7 Active Member

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    When my Oil Cooler failed there was no loss of water. The contents of the expansion bottle changed colour (as the oil was mixing with the coolant ) and turned brown. When the cap was off the expansion bottle you could smell the oil and the coolant had been replaced with an oil /water mix that was very viscous.
    Hope this helps ...........
     
  8. Hulmie

    Hulmie New Member

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    slight good news had a second flush, and there signs of progress, fingers crossed. coolant/oil mix is looking not as dark which is good. Only thing is the hoses have absorbed the oil an look ****, anyone know where i could get some replacement hose kit????
     
  9. nzhorsey

    nzhorsey New Member

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    Hey guys, this sounds really similar to what I'm experiencing!

    Love to know if anyone else has experienced this. I have just picked up a 2003 a4 Convertible 1.8t and I absolutely love driving it this summer.

    I have just recently discovered that there is a thick brown milkshake looking substance in the coolant overflow tank. There is no milky residue under the oil cap, no milky residue on the dipstick, it is not overheating, and is driving perfectly!

    The brown milkshake doesn't smell oily but rather has a peculiar fruity smell????

    Does ra anyone have a clue at what could be causing this?
    I should add it has only done 117km, has been serviced religiously, and we'll taken care of!
     
  10. Mike_B

    Mike_B Active Member

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    I suspect this is the result of two different types of anti-freeze being used, having had what sounds like the same problem. I know my garage topped up antifreeze at some point after I got the car, and the muck only appeared after that. I'm afraid I can't recall what they used, and I've not idea what was in the car when I got it.

    Anyway, after a belt and waterpump change, and the associated faffing around which resulted from that, the system was of course flushed and whatever they've put in now seems fine. No doubt someone more expert than I will be able to tell us what actually caused the problem, in the sense of the mixing of different antifreeze.
     

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