Mack Trucks has introduced the Bulldog mDrive Transmission Fluid SAE 75W-80, for its mDrive automated manual transmission. The fully synthetic, heavy-duty transmission lubricant is available for all applications and is formulated to meet the exacting Transmission Fluid 97318 specification. The fluid is available in five-gallon pails and four one-gallon jugs. Features include a high viscosity index, shear stability, thermal durability and oxidation resistance, and stable, optimized friction properties, Mack says.
Affected tractors are equipped with an automated Eaton UltraShift Plus or Eaton Advantage Transmission with right hand stalk shifter. In the affected trucks, the display on the instrument panel can indicate “N” when the shifter is set into “D” or “R,” causing the truck not to move.