Basically, I thought oil was, oil, if the specifications are met ... unfortunately seems not so. Had the oil comes the Golf 4 prophylactically replaced by the LiquyMoly and following Kaltschaltschwirigkeiten. After back and forth, I struggled through myself again Gege the Castrol to replace, after a couple of 100km it was then much better.
Do not know whether the Castrol now to sooo much better or LiquyMoly is simply inferior only a quality fluctuation.