DM688S, Heavy Duty Trucks - Garbage Trucks - Roll-Off, Mack , 12 Spd, 1988 MackDM688S rolloff, 6 cyl Mack diesel, 12 speed, Connecticut title, 437,550 miles, 1N2B13008JW001960. Freshly painted. We take anything in trade will buy your trucks and equipment and will refuse no reasonable offer. Call Nick at 860-861-1326 or Mike at 860-861-4199 Price does not include sales taxes or $198.25 documentary fee, Horse Power, Suspension, Wheels, Wheel Base, , Axle, Ratio,