Even the hardest of worked combines can be made to look pretty respectable after a quick clean, a point many used combine buyers have discovered to their subsequent cost. You have to delve deeper into the machines before you can begin to see their real condition. To highlight some critical areas, we have closely examined a seven- and an eight-year old Claas Dominator 108 SL, with our own first impressions proving to be pretty unreliable on closer inspection!