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POWERDRIVE® SYNTHETIC ARCTIC TO-4 FLUID
Sub-Zero Precision for Extreme-Cold Heavy Equipment Drivetrains
Phillips 66® PowerDrive® Synthetic Arctic TO-4 is a full-synthetic, multi-functional lubricant specifically engineered for heavy-duty off-road equipment operating in extreme sub-zero environments. Designed to meet the stringent frictional requirements of Caterpillar TO-4 and Allison C-4, this fluid provides immediate hydraulic response and gear protection where conventional fluids would turn to a near-solid state. Its 100% synthetic base stock offers an exceptionally high viscosity index, ensuring that the fluid remains thin enough for rapid circulation at -50°C while maintaining the critical film strength required to protect high-torque final drives and transmissions when equipment reaches operating temperature.

PRODUCT RESOURCES
PERFORMANCE
Arctic Fluidity: Engineered to remain pumpable at temperatures where standard TO-4 fluids cavitation-lock hydraulic pumps and starve bearings.
Frictional Precision: Maintains the exact static-to-dynamic friction ratio required for Caterpillar powershift transmissions to ensure zero clutch slippage.
Rapid Heat Transfer: Efficiently moves heat away from internal clutch packs and brake discs to prevent localized "hot spotting" during heavy cycles.
PROTECTION
Anti-Wear Shield: Fortified with specialized additives that protect high-load final drive gears and differentials from scuffing and spalling.
Shear Stability: Full-synthetic molecules resist mechanical shearing under the massive torque of mining and forestry equipment.
Seal Integrity: Formulated to remain compatible with specialized arctic-grade elastomers, preventing shrinkage and leaks in freezing conditions.
UPTIME
Fast Start-Up: Eliminates the long "warm-up" periods required for mineral oils, allowing equipment to get to work immediately without risking pump damage.
Component Longevity: Reduces the "dry start" wear on planetary gear sets and hydraulic cylinders by providing instant lubrication.
Reliable Braking: Ensures consistent response and eliminates "stick-slip" in integrated wet brake systems, improving operator safety.
COMPOSITION
RESISTANCE
PROTECTION
FEATURES & BENEFITS
Full-Synthetic Endurance: Provides superior oxidation resistance compared to mineral-based TO-4 fluids.
Broad Temperature Range: While optimized for the cold, it maintains a robust lubricating film as equipment works through high-duty cycles.
Anti-Foam Technology: Prevents air entrainment to ensure a stable, non-compressible hydraulic stream for precision implement control.
Corrosion Inhibition: Protects internal steel and yellow-metal components from moisture-related pitting during seasonal storage.
Multi-System Versatility: Suitable for use in transmissions, final drives, and hydraulic systems from a common arctic reservoir.
APPLICATIONS
Caterpillar, Komatsu, and other off-highway equipment requiring TO-4 or Allison C-4 specifications in extreme cold.
Heavy-duty powershift transmissions, final drives, and wet brake systems in mining and forestry.
Industrial hydraulic systems operating in outdoor environments with extreme seasonal temperature shifts.
Equipment where rapid cold-weather deployment is mission-critical to prevent project delays.
Licenses & Approvals:
Caterpillar TO-4
Allison C-4
ZF TE-ML 03C
Vickers M-2950-S
MAMMOTH TECHNICAL TIP:
In extreme cold, "Pump Cavitation" is the number one cause of drivetrain failure. When a standard 10W or 30W TO-4 fluid is cold-soaked at -30°C, its viscosity increases exponentially, creating a vacuum at the pump inlet that physically tears metal off the pump's internal surfaces. PowerDrive® Synthetic Arctic is engineered with a pour point of -57°C, meaning it stays "liquid-solid" far below any mineral oil. From a Red Seal perspective, pay attention to the "Clutch Engagement Timing" (CET); in cold weather, thick oil slows down the piston travel in a powershift transmission, causing the clutches to stay partially engaged too long. This synthetic fluid ensures the piston moves at the exact millisecond intended by the ECU, preventing the friction-material "burn-off" that usually occurs during winter startups.
