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« Last post by MEZZA on 28 November 2025, 22:20 »
Just looking at other forums about this issue and came across a silicate cartridge you can get instead of a bag - looks like a small white cylindrical plastic object that goes inside the expansion tank and you can get them for about. £20.00 - supposed to be stronger than a bag but still need changing every few years - unclear as to if you just place it inside the tank or maybe there is specific tank for them - as been mentioned, VW put the bags in to help prolong coolant anti corrosion properties and unless you change to G12 Evo keeping to G13 without the bag could compromise this? Google VW silicate cartridge and you will see them - anybody have more info on this ?