Author Topic: Coolant Silica Bag  (Read 1029 times)

Offline Yusee

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Re: Coolant Silica Bag
« Reply #20 on: 09 February 2022, 09:22 »

VW did away with the silica bag, which "tops up" the antifreeze, in later model years anyway and changed the spec of the anti freeze to compensate.


Interesting thread. I’m inclined to leave mine, because I get the impression risk of rupture is extremely small- and not worth worrying about.

Did vw do away with the bags because a different coolant was available or because the bags were causing problems?
2018 Golf GTI Performance  5dr manual, Isaac blue
1988 Peugeot 205 GTI 1.9

Offline joe6

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Re: Coolant Silica Bag
« Reply #21 on: 09 February 2022, 10:15 »
IIRC I think the coolant specified is called something like G12 EVO now.

https://forums.ross-tech.com/index.php?threads/20182/

All very confusing, but then i saw this post by Steve Cresswell/Crasher at CR Enterprises in Nottingham who is probably the most super knowledgable guy when it comes to VW.

https://www.vwaudiforum.co.uk/forum/showthread.php/197007-Heater-problems

Thanks, useful links.  👍

G12 evo seems to be the way to go as compatible with most earlier versions.
« Last Edit: 09 February 2022, 10:17 by joe6 »
Mk6 GTI Carbon Grey, 2010 Bluetooth and voice fitted, a few VCDS mods still a comfortable family car. Red Scirocco 2011 twin charger stage 1 - enjoyable drive now gone.  White 2016 Polo GTI (roller skate on steroids) replaced with an Indium Grey 2019 7.5 GTI PP.

Offline Adam T7

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Re: Coolant Silica Bag
« Reply #22 on: 09 February 2022, 14:58 »
All sorted, new bottle fitted in 10 mins.
MY2019 GTI 5 Door, PP, DSG, Indium Grey.

Offline madstaff

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Re: Coolant Silica Bag
« Reply #23 on: 09 February 2022, 15:00 »
All sorted, new bottle fitted in 10 mins.

Did the old bottle have a silica bag inside??
2017 Clubsport Edition 40 #706.

Urano grey, 3 Door, Manual, Recaros, Brescias, DCC, Nav Pro, Black roof & tints.

Offline Adam T7

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Re: Coolant Silica Bag
« Reply #24 on: 09 February 2022, 15:06 »
All sorted, new bottle fitted in 10 mins.

Did the old bottle have a silica bag inside??

Yes, un-damaged but I feel happier now it’s gone.
MY2019 GTI 5 Door, PP, DSG, Indium Grey.

Offline Rudedog

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Re: Coolant Silica Bag
« Reply #25 on: 09 February 2022, 15:37 »
Not sure about saying that cars post 2017 all are filled with G12EVO.... the online and paper handbook with my 2019 car still says to use G13.

"The cooling system is filled at the factory with a mixture of specially prepared water and at least 40% coolant additive G 13 (TL-VW 774 J)"

"When refilling the coolant, a mixture of distilled water and at least 40% coolant additive G 13 or G 12 plus-plus (TL-VW 774 G) (both of which are dyed purple) must be used in order to obtain the optimum corrosion protection →"

Taken direct from the handbook



« Last Edit: 09 February 2022, 15:39 by Rudedog »
2019 Golf GTi PP DSG, Isaac Blue.

Offline Yusee

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Re: Coolant Silica Bag
« Reply #26 on: 09 February 2022, 15:50 »
Same as mine. Mine’s a late 2018 car with the bag, and g13.
2018 Golf GTI Performance  5dr manual, Isaac blue
1988 Peugeot 205 GTI 1.9

Offline Adam T7

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Re: Coolant Silica Bag
« Reply #27 on: 09 February 2022, 17:08 »
Ditto (though now bagless)
MY2019 GTI 5 Door, PP, DSG, Indium Grey.

Offline joe6

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Re: Coolant Silica Bag
« Reply #28 on: 09 February 2022, 19:21 »
Ditto.  Mid 2019 build.
Mk6 GTI Carbon Grey, 2010 Bluetooth and voice fitted, a few VCDS mods still a comfortable family car. Red Scirocco 2011 twin charger stage 1 - enjoyable drive now gone.  White 2016 Polo GTI (roller skate on steroids) replaced with an Indium Grey 2019 7.5 GTI PP.