I've got a water-cooled DF 1.9 petrol in my van and I've just had the head gasket and water seals replaced.
I did mention to the garage that I believed that a specific type of coolant was required to prevent the head bolts rusting and they seemed to be aware of this as they do a lot of work on VW campers.
When I checked my bill the coolant used is called GEC2001, is this the correct type or at least has the same properties as the G12 stuff that seems to be the norm on other topics on the site?
Thanks in advance

Brian