The Germans have been using 2-EHA for a while. Both BMW/Mini and Mercedes uses G-48, which has 2-EHA in it. Mercedes used to use G-05 and it's still approved. VAG's coolants also have 2-EHA, and coolant seepage in some VW/Audi models does exist.
Originally Posted By: revvedup
The VW/Audi coolant G12, etc has no 2-EHA and those cars use plastic parts in the cooling system, too.