Antifreeze, which one?

[rollercoaster]

Ok so I am laying up my Syncro,
its got an AGG, Mk3 Golf engine,
and I dont know what antifreeze to use,
guess I am a bit stupid for not remembering
or making a note..
I have a few leftovers to choose from:

Quantum Antifreeze Red, Long Life
Comma X Stream G48
Comma X Stream G30

My guess is the concentrated one, G48
as theres not a lot of room in the expansion.

Cant have too much in the mix?


 

[Stesaw]

I'd drain the system, flush it with distilled water, drain again and fill with new coolant, saves mixing by accident.
Whatever distilled water left over will be reet with whatever coolant you put in.

The concentrated one will need to be mixed with distilled water anyway so kills two birds etc.

[rollercoaster]

Thanks, 
and I was just going to top it up.
Studied the Haynes as well now.