The VAG specification for G12 antifreeze is TL 774-D (red/pink?) The VAG specification for G12+ antifreeze is TL 774-F (lilac) 40 ☌ > 60% AF/40% Water (maximum recommended AF concentration ) 35 ☌ > 50% AF/50% Water (easiest to mix and best concentration for UK usage) Recommended mixture ratios: Frost protection to Anti-freeze amount G 12 / Water ◆ If radiator, heat exchanger, cylinder head or cylinder head gasket is replaced, do not reuse old coolant. ◆ The refractometer T10007 is recommended for determining the current anti-freeze density. ◆ If for climatic reasons a greater frost protection is required, the amount of G 12 can be increased, but only up to 60 % (frost protection to about -40 ☌), as otherwise frost protection is reduced again and cooling effectiveness is also reduced. The anti-freeze ratio must be at least 40%. ◆ The coolant concentration must not be reduced by adding water even in warmer seasons and in warmer countries. ◆ Protection against frost must be assured to about -25 ☌ (in arctic climatic countries to about -35 ☌). ◆ Because of its high boiling point, the coolant improves engine reliability under heavy loads, particularly in countries with tropical climates. For this reason the system must be filled all year round with frost and corrosion protection additives. ◆ G 12 and coolant additives marked "In accordance with TL VW 774 F" prevent frost and corrosion damage, scaling and also raise boiling point of coolant. ◆ G 12 violet (in accordance with TL VW 774 F) can be mixed with the previous coolant additive G 12 red ◆ Only use coolant additive G 12 in accordance with TL VW 774 F. HM: I found this G12 information on the web, pretty sure it's official VW, relating to G12 (pink or violet) It will take 8 or 9 litres of anti-freeze to fill your system (before diluting) = 6 bottles = £27.00 at GSFĥ0/50 mix (UK ideal for -30 frost protection, corrosion protection, high boiling point and heat transfer) GSF do it for £4.50 for 1.5Litres (concentrate, makes double)Īvoid non-recommended brands as the T25 WBX is prone to corrosion on parts that the coolant comes in contact with (i.e the bolts that hold your engine together.) If these corrode then when it eventually comes to change your cylinder head these are likely to snap and your engine will bassically need to be rebuilt. VW G12+ its pink and can mix with previous versions of VW coolant G12+, G12++ and G13 are updates on it, backward-compatible. There is also G13 (meets newer EU regulations) although 80/90 still discussing whether is OK to use. G12 Plus Plus is the latest VW variant of this product Still Violet in colour and 5 year change cycle (original non organoacid types only lasted 2 years).
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