Coolant and Heating recommended brands

VW G12+ its pink and can mix with previous versions of VW coolant GSF [1] do it for £4.50 for 1.5Litres (concentrate, makes double) Avoid unreccomrended brands as the T25 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.

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it will take 9 litres of coolant to fill your system. (before diluting) =6 bottles = £27.00 at GSF

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also recommended by mocki Comma Super Coldmaster - Concentrated Antifreeze

2 Years Longlife Protection.
-36°c (Ambient) Winter Protection.
+45°c (Ambient) Summer Protection.
Premium traditional antifreeze contains Mono Ethylene Glycol.
Contains No Methanol or Alcohol.
Suitable for use in all petrol and diesel engines.
Meets quality standard BS 6580-1992.
Meets AFNOR NFR 15-601 (except Reserve Alkalinity).

I get it from local motorfactor, "Wilco" and its £20 for 25L or was last year...with trade discount - its g12 spec too.(and blue) http://www.wilco-fastfit.co.uk/wilco/html/antifreeze___coolant.html To non trade its £34.99 for 20L that still works out at 0.57p a litre compared to 3£/L for G12+ If anyone knows of a national outlet for this product please post it

The VW spec for G12+ is TL 774-F