T4 coolant

Hi all. am new to aussieveedubbers.
Have read that G12++ coolant is best for T4s.
I have a 2.4 diesel syncro.
At the car parts shop. None of the coolants, on the shelf, show the letters G12++ . where do I buy G12++ ?
Also has anyone out there done their own radiator flush. was it difficult. I have the Brooklands manual.

cheers ........

Any VW parts shop should have it

Dealership part only, its pink, Ask the dealer what its compatible with, in case you get stuck away from home.