The Paccar 12-speed automated transmission was designed from the ground up to work seamlessly with PACCAR MX engines and axles. The purpose-built automated transmission represents a major advancement in powertrain performance, productivity, efficiency, driveablilty and return on investment. This 12-speed transmission features 1,850 lbs-ft torque, with the deepest reverse ratio among linehaul transmissions for slow speed maneuvering, says the company. For transmission oil changes in linehaul applications, Paccar recommends an oil change every 750,000 miles. Transmission oil changes require only 16 pints of oil. The system also features a fluid pressure sensor to notify the driver of low oil, to prevent gear burn-up. Other features include smooth and intuitive shift strategies that improve fuel economy and driver comfort and internal electrical system routing that minimizes exposure to corrosion to wires and connectors, as well as a cooler-less precision lubrication system.