yep, put in the 0w-40 lubro-moly in the 1.8T Golf GL today and drained out the 4000miles old castrol german 0w-30 and by its colour, it prolly couldve went longer (whats colour tell us anyway-nothing right. except the filter is doing its job at least). i WILL be testing this sample of german syntec since the other has been lost in the move to my new home. just gotta get a container for it and have the boys at blackstone send me yet another sample tube! as for immediate noticeability, the engine IS a little more quiet and smooth and this stuff smells EXACTLY like the german syntec! of ocurse the colour is different and is more like Mobil 1 but (perhaps a tad lighter) but the smell is nothing like M1. anyways, gotta go to bed before my wife divorces me. later, chris j.