Mack Launches Bulldog® mDRIVE™ Transmission Fluid


GREENSBORO, NC (April 22, 2013) – Mack Trucks today introduced the Bulldog® mDRIVE™ Transmission Fluid SAE 75W-80, a new transmission fluid for its mDRIVE automated manual transmission.

Engineered specifically to complement the exceptional performance and productivity of the mDRIVE, the transmission fluid is a fully synthetic, heavy-duty transmission lubricant.

Bulldog mDRIVE transmission fluid delivers the lubrication, component protection and fuel economy demanded by the mDRIVE and is formulated to meet the exacting Transmission Fluid 97318 specification.

“Bulldog mDRIVE Transmission Fluid SAE 75W-80 is the transmission fluid of choice for the mDRIVE Transmission for all applications,” said David McKenna, Mack director of powertrain sales. “Designed with the latest lubrication technology based on advanced synthetic base stocks and a unique additive system, Bulldog mDRIVE transmission fluid sets the new transmission standard in terms of fuel efficiency, payload capacity and reduced maintenance.”

Key benefits include:
• 75W-80 viscosity grade – Maintains the fuel economy benefits of the mDRIVE through reduced viscous churn, smoother gear meshing and easier pumping and filtering
• High viscosity index – Allows for outstanding low-temperature fluidity for quicker starts, easy shifts and reduced wear during cold start-ups while providing strong lubricating films at higher temperatures
• Exceptional shear stability – Maintains effective viscosity and film strength for better wear protection during severe operation
• Excellent load carrying capability – Helps protect against wear under all operating conditions throughout the life of the transmission
• Outstanding thermal durability and oxidation resistance – Protects against deposit formation, and contributes to long seal life and extended oil drain and service intervals
• Stable, optimized friction properties – Allows for smooth and rapid gear shifting, which can reduce stress on the driveline and tires

• Extended drain capability – Approved for up to 500,000-mile oil drain intervals, helping to reduce operating costs (refer to specific vehicle manual for proper drain interval)

Bulldog mDRIVE Transmission Fluid SAE 75W-80 is available in both five-gallon pails (P/N 9853-120550) and four, one-gallon jugs (P/N 9853-120551). 

Mack® trucks are sold and serviced through an extensive distribution network in more than 45 countries. Mack trucks, diesel engines and transmissions sold in North America are assembled in the United States. Mack manufacturing locations are certified to the internationally recognized ISO 9001 standard for quality, ISO 14001 standard for environmental management systems and OHSAS 18001 standard for health and safety management systems. Mack is also a proud sponsor of Share the Road, an American Trucking Associations public information campaign aimed at enhancing the safety of our nation's roadways.

Mack Trucks is part of the Volvo Group, which is driving prosperity through transport and infrastructure solutions, offering trucks, buses, construction equipment, power solutions for marine and industrial applications, financing and services that increase customer uptime and productivity. Founded in 1927, the Volvo Group is committed to shaping the future landscape of sustainable transport and infrastructure solutions. The Volvo Group is headquartered in Gothenburg, Sweden, employs almost 100,000 people and serves customers in more than 190 markets. In 2020, net sales amounted to about $36.8 billion. For more information, please visit