Subject: Coolant / Antifreeze Thu Jul 08, 2021 5:33 am
Hi I need some advice re coolant for a water-cooled 16 plate Danbury. I am confused re which coolant to use. I know its the "pink" one but there seem to be quite a range of types. Halfords are none the wiser as the VRN / number plate doesn't come up on their data base and they can't / won't specify which one to use Any suggestions ? Thanks
Cabin : Club Location : Cumbria Posts : 37 Join date : 2020-08-03
Hi the correct designation is on the side of the expansion tank I.e G12 You can use G12+ or G12++ The extra issue is that different manufacturers use different coding I found this table very useful sorry but the lines didn’t come over.
VW BASF Colour Description G11 G48 green/ blue- green Standard for coolant with inorganic acids. G12 red/pink Volkswagens first coolant with OAT formula and free of silicate. Do not mix it with G11 coolants! Agressive chemical reactions attack the cooling system and the lubricant would clump together. G12+ G30 red/violet As reaction of the mixture problems between G11 and G12, the G12+ was designed. It can be mixed with G11 and G11 coolants. It is free of silicate. G12++ G40 red/violet The successor of the G12+ coolant was used in every VW and Audi car. It shows an improved corrosion protection, higher boiling point (135 degrees) and better heat dissipation.
In short I use G40 which Halfords sell which is equivalent to G12++ do not use G11
Another coolant to add to the mix which is recommended by VWAudi is the G13 (violet) which is more environmentally friendly and better anti-corrosion properties than G12++ but can also be mixed with G12