GolfGTIforum.co.uk
Model specific boards => Golf mk7 => Topic started by: KieranD79 on 15 November 2023, 10:30
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Hi everyone,
Pretty much as the subject says...
I've checked for 'mit Silikat' on the expansion tank, not there, I've looked in the tank, can't see anything, even stuck my finger in and had a feel around, can't feel anything obvious, so how do I know if my GTI has the (potentially) troublesome silicon bag?
I want to get rid if it does but would rather not replace the coolant tank for no reason.... I don't trust myself to not split the bag when trying to remove it so would rather just replace the tank.
Did they delete this on the later models?
Thanks :smiley:
(https://i.postimg.cc/Y0gRyV39/IMG20231115102827.jpg) (https://postimages.org/)
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I have had my mk7 Gti since new (2013) and have the bottle "Mit Silikat" and have had no issues if that helps. I do have the bag and can see it in base of bottle. Its there for a reason to compensate for G13 coolant lesser value of silikat compared to older G12 coolant. The silikat in the "Bag" gives the coolant longer life in the system and also protects aluminium internal components from degredation. If it aint broke dont fix it. But if you like others have it in your head to remove it, i would recommend buying a new bottle with a new bag, or else a new bottle with no bag and then carry out coolant changes more often.
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Our July 2019 GTi had a silicone bag, but it did say 'mit Silikat' on the header tank.
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My MY2019 was built in October 2018 and delivered in December. Definitely was ‘Mit Silikat’ so I replaced the tank. I am sure I read on here somewhere that very late MY19’s were Silikat free though.
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Loads of info in this thread - https://www.golfgtiforum.co.uk/index.php?topic=288480.0
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I have had my mk7 Gti since new (2013) and have the bottle "Mit Silikat" and have had no issues
You need to remove it asap as if it goes you will have big problems and you get no warning at all of the huge bill you are going to get when it bursts. It is an easy job if you see the bag of just clamping the pipes and removing the tank to remove the bag or clamp them attempt to remove the big in situ and if it does break then remove the tank to clean it all out. Only costs a litre of coolant to do and 20minutes of time .
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My GTI is a 2020MY (69 plate) and does not have the silicon bag fitted.
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I have had my mk7 Gti since new (2013) and have the bottle "Mit Silikat" and have had no issues
You need to remove it asap as if it goes you will have big problems and you get no warning at all of the huge bill you are going to get when it bursts. It is an easy job if you see the bag of just clamping the pipes and removing the tank to remove the bag or clamp them attempt to remove the big in situ and if it does break then remove the tank to clean it all out. Only costs a litre of coolant to do and 20minutes of time .
Sorry but I don’t need to remove it asap. It’s there for a reason. I’d easily remove it but just don’t believe all the hype on the internet blown out of all proportion. I’ll let you all know if it bursts and you can say “I told you so!” :wink:
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Mit Silikat also.
2013 no issues.
I will also let you all know if it does cause a problem but I doubt it will.
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Interested to know if the later cars have done any with the bag what version of coolant they are using to make up for it?
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Interested to know if the later cars have done any with the bag what version of coolant they are using to make up for it?
I would assume they are filled with G12 Evo which comes with the silica that the G13 didn’t.
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Oh Ok - all I could find about G12 evo was that's a pre-mixed solution.
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Sorry but I don’t need to remove it asap. It’s there for a reason. I’d easily remove it but just don’t believe all the hype on the internet blown out of all proportion. I’ll let you all know if it bursts and you can say “I told you so!” :wink:
Not Hype at all, I know 2 people that have had it break GTi and one R that had to have a new heater Matrix as it could not be flushed out properly. The guy who I use for big jobs is a VW specialist has also had a good few fail on VW/Audi vehicles. Prevention is the best route to take but it's your car your gambling with.
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Sorry but I don’t need to remove it asap. It’s there for a reason. I’d easily remove it but just don’t believe all the hype on the internet blown out of all proportion. I’ll let you all know if it bursts and you can say “I told you so!” :wink:
Not Hype at all, I know 2 people that have had it break GTi and one R that had to have a new heater Matrix as it could not be flushed out properly. The guy who I use for big jobs is a VW specialist has also had a good few fail on VW/Audi vehicles. Prevention is the best route to take but it's your car your gambling with.
Local Indy told me he’d just had a Cupra in that needed a new heater matrix, not a cheap job. I wouldn’t (and didn’t ) take the risk for something that takes a few minutes and a few quid (for a new tank) to fit.
As for G13, it’s fine to use, just maintain the concentration.
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I'd rather go to the trouble to siphon out some coolant every year and top up with fresh antifreeze rather than replace the heater matrix.
Apparently the silica gets everywhere in the cooling system and is a nightmare to fully flush out.
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Also no silica bag. I just test the coolant with an anti-freeze tester and if it needs done then just change it. Really doesn't need done much more than with the bag.
https://www.amazon.co.uk/Draper-35807-AFT-4B-Anti-Freeze-Tester/dp/B07TXF11ST/ref=sr_1_1?crid=2B7D5AO5GZD8J&keywords=Draper+35807+Anti-Freeze+Tester&qid=1700325054&sprefix=draper+35807+anti-freeze+tester%2Caps%2C180&sr=8-1
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Sorry but I don’t need to remove it asap. It’s there for a reason. I’d easily remove it but just don’t believe all the hype on the internet blown out of all proportion. I’ll let you all know if it bursts and you can say “I told you so!” :wink:
Not Hype at all, I know 2 people that have had it break GTi and one R that had to have a new heater Matrix as it could not be flushed out properly. The guy who I use for big jobs is a VW specialist has also had a good few fail on VW/Audi vehicles. Prevention is the best route to take but it's your car your gambling with.
Very dramatic. Bag will stay in and be fine. My car is 10 years old and I’ve had it since new. You can do the worrying for me. :grin:
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I was 50:50 when I did mine... I thought I'd have a look one day.... and it was right there, poking up at me.... seemed rude not to take it out.
Bit like the first thing I did when I got my car.... I'd read about the bonnet cable coming loose so then couldn't open it, no idea if it was common or if it would ever happen to me but two cable ties and job done.
Like with most things.. prevention is easier than the cure.
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I was 50:50 when I did mine... I thought I'd have a look one day.... and it was right there, poking up at me.... seemed rude not to take it out.
Bit like the first thing I did when I got my car.... I'd read about the bonnet cable coming loose so then couldn't open it, no idea if it was common or if it would ever happen to me but two cable ties and job done.
Like with most things.. prevention is easier than the cure.
I told have the cable tie done on my bonnet but these are not the same thing. I agree prevention is better than the cure. This is prevention in the case of the bonnet cable. The bag in the coolant expansion bottle is actually protecting your engine internals from corrosion and wear. It’s not the same thing. Imagine all the people not on forums driving around oblivious to this ticking time bomb :whistle: :whistle: :whistle: :whistle:
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I was 50:50 when I did mine... I thought I'd have a look one day.... and it was right there, poking up at me.... seemed rude not to take it out.
Bit like the first thing I did when I got my car.... I'd read about the bonnet cable coming loose so then couldn't open it, no idea if it was common or if it would ever happen to me but two cable ties and job done.
Like with most things.. prevention is easier than the cure.
I told have the cable tie done on my bonnet but these are not the same thing. I agree prevention is better than the cure. This is prevention in the case of the bonnet cable. The bag in the coolant expansion bottle is actually protecting your engine internals from corrosion and wear. It’s not the same thing. Imagine all the people not on forums driving around oblivious to this ticking time bomb :whistle: :whistle: :whistle: :whistle:
My understanding of the silica bag is that it slows the degradation of the glycerin based G13 coolant over time. Simply siphoning out the expansion tank and topping up with neat G13 (I hope) has the same effect. Just checked mine and it’s safe down to -37c.
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Just wondering if anyone has a picture of where these cable ties go?
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Just wondering if anyone has a picture of where these cable ties go?
Google is your friend :smiley:;
https://www.vwroc.com/forums/topic/28638-bonnet-catch-broken/
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Thank you SRGTD! :smiley:
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Thank you SRGTD! :smiley:
Got around to doing mine today, could not get a tie around the middle section so just did a tie at each end.
(https://i.postimg.cc/9FX101dw/IMG-2955.jpg) (https://postimg.cc/K4VtsPsm)
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^^^
Exactly how I did mine. :smiley:
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^^^
Exactly how I did mine. :smiley:
Hopefully we are both not wrong then😄