Omnibus OF1621 features an Allison T270R with a retarder for extending brake life BUENOS AIRES, Argentina – Mercedes-Benz and its official Argentinian dealer COLCAR have developed a new bus, equipped with an Allison Transmission, for public passenger transport. The Omnibus OF1621 Euro V features an Allison fully automatic T270R transmission, with retarder, and a Mercedes-Benz […]