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G13 coolant and water question??

Discussion in 'Audi S4/A4/A4 Cab (B8 Chassis)' started by johnnevett, Jun 14, 2014.

  1. johnnevett

    johnnevett Member

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    Hi
    changing the coolant next week as part of the full service I'm doing but I have a question about what water to mix the coolant with???
    Is normal tap water ok? Or does it have to be distilled? And is distilled and deionised the same??
    if not where can I get distilled water from?
    thanks
    john
     
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  3. B5NUT

    B5NUT Well-Known Member
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    Just normal tap water should be used.
     
  4. johnnevett

    johnnevett Member

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    That's good to know. Thanks
    I'm also doing a full brake fluid flush. Is ATE super blue ok for an everyday car- non track. Or should I stick with OEM? Only wanted to use the blue so I know when all the old fluid is out.
    Thanks
     
  5. B5NUT

    B5NUT Well-Known Member
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    Personally I would stick with OEM. I would not mix the two fluids as I think is going to be difficult to get all of the old fluid out, and you would also need to do the clutch as well.
     
  6. johnnevett

    johnnevett Member

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    I'll stick with OEM
    Clutch??? How do I do that.
     
  7. rum4mo

    rum4mo Active Member

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    Out of interest, if your car has G12+, G12++ or G13 coolant mixture in it, why are you replacing it?
     
  8. johnnevett

    johnnevett Member

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    My car is a 2008 and there is no record of a coolant change in the history.
     
  9. desertstorm

    desertstorm Well-Known Member
    Audi A4

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    G12, G13 seems to have a 5yr life from what I have seen. I use tap water to top up but I boil it first and leave it to stand to get rid of some of the chemicals in there.
     
  10. rum4mo

    rum4mo Active Member

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    Ah, I thought like modern Ford like stuff it would not degrade like the older brews that lost their inhibitor effectiveness quite quickly.

    So, this is what it has come to, when you move on from elastic band driven valve gear - where you changed the band(s) and water pump, and so the fluid, every few years - you start to have chain driven valve gear, but now need to make a special effort to remember to change the coolant.

    Having said all that, I changed coolant on a Fiesta 1.6Si (Zetec) my wife had years ago, even although it was long life stuff, when the car was over 6 years old, I reverse flushed the system, filled up with 50% Motorcraft proper stuff, started engine and went for a quick run, stopped back at the house only to heard water flowing - water pump seal "gone" - oh bother, new pump and another new cambelt etc!!
     

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