In favor of mutual satisfaction and quality collaborations, installation check ups are a part of Navela's principles. In the presence of Navela's technical team and specialist from Japan and the Netherlands, check ups were run on several engines across the Adriatic coast. The highlight is on the JH common rail and 4LV series of engines, which confirmed all the declared advantages for end users, such as power, interconnectibility, saving, pleasure for the user and surroundings in terms of being quiet with a low emission of exhaust fumes.