hello if it were possible I would like to have information on the following models:531 from 74 kw, 100 hp years 80 / 90- and 541L I believe in motors deutzif I do not ask much about 912/921 L series excavators, I have noticed many similarities to models of O & K Orenstein and Koppel, I'm wrong, perhaps in the past these prestigious brands have collaborated together. ? Thank you for your attention, thanks to those who will provide useful information, opinions or personal experiences thank you
