damn why dont I get mails after my last response??? Happens quite often in this Forum.
Ok, thanks for the info and all the input.
I'll scrounge a little bit more through the German sites of the big oil companies like Castrol and see if I find some recommendation.
Then I'll ask the guys at Liqui Moly again what they mean is the appropriate with all the Specs from Lucas, Royal Purple and so on.
But I'll bet I end up with using the 'normal' hydraulic/ steering fluid or good ATF
Thanks folks.