AMSOIL TORQUE-DRIVE® 100% SYNTHETIC AUTOMATIC TRANSMISSION FLUID

AMSOIL Torque-Drive® 100% Synthetic Automatic Transmission Fluid is a heavy-duty ATF built to handle the punishing demands of commercial and fleet transmissions from Allison, MAN, Voith, ZF, and others. It replaces multiple conventional fluids with a single, multi-functional synthetic formulation that delivers superior wear protection, friction stability, and extended service life across a wide range of heavy-duty applications.

Heavy-duty automatic transmissions in transit buses, garbage haulers, dump trucks, cement mixers, and line haul trucks face some of the most brutal operating conditions of any drivetrain component. Constant stop-and-go cycles, heavy loads, and extreme ambient temperatures push conventional petroleum ATFs past their limits, leading to oxidation, sludge buildup, and degraded shift quality. The cost of a failed or poorly performing transmission in a commercial vehicle goes far beyond the repair bill. It means downtime, missed routes, and lost revenue.

FIGHTS THERMAL AND OXIDATIVE BREAKDOWN
Severe-service duty cycles generate sustained high heat that accelerates oxidation in conventional transmission fluids. As the fluid oxidizes, it thickens, forms sludge that blocks small valves, and deposits varnish that restricts component movement. The result is sluggish shift times and accelerated internal wear. Torque-Drive's advanced synthetic base oils deliver a slower-than-normal oxidation rate, resisting the thermal degradation that sidelines conventional fluids. With a flash point of 224°C (435°F), this fluid maintains its integrity in the sustained high-temperature environments common to heavy-duty commercial transmissions.

MAINTAINS FRICTION STABILITY AND SHIFT QUALITY
Oxidation byproducts don't just thicken the fluid. They destroy the carefully calibrated friction characteristics that control shift feel and timing. In heavy-duty Allison transmissions and ZF automatic units, degraded friction properties lead to clutch glazing, elongated shift times, and rough engagement. Torque-Drive maintains proper coefficients of friction throughout its service life, keeping clutch engagement consistent and smooth. For fleet operators running mixed equipment with Allison TES-295 or ZF TE-ML 03D requirements, this translates directly to fewer transmission-related complaints and service calls.

FLOWS QUICKLY IN EXTREME COLD
Cold-start performance is critical for fleets operating in northern climates. Conventional ATFs contain paraffin wax that thickens dramatically at low temperatures, starving components of lubrication and preventing the precise operation of electronically controlled solenoids. Torque-Drive posts a Brookfield viscosity of just 8,278 cP at -40°C (ASTM D2983) and a pour point of -56°C (-69°F). That kind of cold-flow performance means transmissions in school buses, emergency vehicles, and line haul trucks respond immediately at startup, even in the worst winter conditions. No waiting for the fluid to warm up before heading out on a route.

PROTECTS AGAINST WEAR AND VISCOSITY SHEAR DOWN
Transmissions operating under heavy loads need a fluid that holds its viscosity over time. Mechanical shearing from constant gear and clutch interaction causes conventional fluids to lose viscosity, thinning out and reducing the protective oil film between metal surfaces. Torque-Drive's top-tier synthetic base oils and premium additive package resist viscosity shear down, maintaining a kinematic viscosity of 7.3 cSt at 100°C and a viscosity index of 168 (ASTM D2270). In Four-Ball Wear Testing (ASTM D4172), it produced a wear scar of just 0.41 mm, confirming strong anti-wear film strength under load.

ONE FLUID FOR MIXED FLEETS
Managing fluid inventory across a fleet of varied equipment is a real headache. Torque-Drive meets a broad range of heavy-duty specifications, making it a practical single-fluid solution for mixed fleets. It covers Allison TES-295, TES-389, TES-668, and C-4, along with MAN 339 Type V-1, V-2, Z-1, Z-2, Z-3, and 339F. It also meets Mercedes-Benz 236.91 and 236.10, Voith 55.6335 and 55.6336, Volvo 97340 and 97341, and a wide range of ZF TE-ML specifications including 03D, 04D, 14A, 14B, 14C, 17C, 20B, and 20C. Additional coverage includes Ford MERCON V, GM DEXRON III-H, Isuzu SCS, and JASO 1-A. That coverage simplifies inventory, reduces the risk of misapplication, and eliminates compatibility concerns.

SPECIFICATIONS AND COMPATIBILITY
Torque-Drive is designed for use in heavy-duty automatic transmissions in both on- and off-highway applications. Target equipment includes municipal and transit buses, motor coaches, garbage haulers, motor homes, delivery vans, emergency vehicles, school buses, dump trucks, utility vehicles, cement trucks, line haul trucks, and tow trucks.

SERVICE LIFE
Torque-Drive is recommended for use according to the extended service interval established by the original equipment manufacturer for the applicable performance specifications listed above. Its resistance to oxidation, shear, and thermal degradation supports longer drain intervals compared to conventional petroleum ATFs, reducing fluid costs and maintenance downtime over the life of the transmission.