you can use G05 if you want but that is a no no for me

use this by sifi:
This is the original coolant used in our cars:

OEM Mercedes-Benz Coolant (blue)
OE Part Number: Q1030004 (replaces older Q1030002)
M/B states that the OEM fluid should never be mixed with any other fluid, which would make me leary of using Zerex G05, unless you do a very thorough flush.

Mercedes Benz ANTICORROSIO - Q1030004

replace engine coolant-q1030004.jpg