Found that Comma have a license to manufacture/supply G05 coolant in the UK, however their technical paperwork states that the G05 is for "heavy use" and the crossfire would be more suitable to the G48. Again there is a certificate showing approval to MB 325.0 for the G48.

Any body any comments on the G48.

on the positive side G05 & G48 appears to be sold by everybody in the UK