Triax 75W-85 DTF-2 Full Synthetic Differential & Drivetrain Fluid (1 Quart) — GL-5, Limited-Slip Ready

Triax DTF-2 75W-85 is a full-synthetic differential and drivetrain fluid formulated to protect gears, enable smooth torque transfer, and work with limited-slip units across many OEM applications.

Designed as a high-performance GL-5 gear oil, Triax DTF-2 combines extreme-pressure additives, shear-stable base stocks, and metal-friendly chemistry for modern differentials, transfer cases, and other drivetrain components. It’s engineered to meet or exceed OEM expectations for U.S., European, and Asian vehicles, offering consistent viscosity from cold startups to sustained high-load operation.

How does Triax DTF-2 protect gears under heavy loads?

The formula includes advanced extreme-pressure (EP) additives and shear-resistant base oils that form a durable lubricating film across gear teeth. This reduces metal-to-metal contact, limits wear, and maintains performance under high torque and high-speed driving.

• API GL-5 rated for heavy-duty gear protection
• EP chemistry for shock-load resistance
• Shear-stable viscosity retention during extended service
• Helps prevent pitting and scuffing in extreme conditions

Will this fluid work with limited-slip differentials and modern OEMs?

Yes. Triax DTF-2 is formulated to be limited-slip ready and matches or improves on many OEM specifications for differentials and transfer cases. It supports frictional properties needed for clutch-based limited-slip units without requiring aftermarket additives unless a manufacturer specifies otherwise.

• Compatible with clutch-type limited-slip units
• Suitable for a broad set of manufacturers including BMW, Ford, GM, Toyota and more
• Engineered to meet OEM frictional stability requirements
• Works as a direct replacement where 75W-85 GL-5 is specified

How does this oil perform in cold starts and high temperatures?

Triax DTF-2 delivers reliable low-temperature pumpability and stable high-temperature protection, ensuring fast lubrication on startup and durable film strength under prolonged heat. The product is tested for all-climate use and maintains functional viscosity down to very low temperatures.

• Low-temperature flow designed for quick startup protection
• Thermal stability for sustained high-heat operation
• Maintains gear engagement feel across temperature extremes
• Rated for use down to approximately -50°F for cold climates

What metal and component protections does it offer?

The additive system is balanced to protect common gear and housing materials, including brass, copper and aluminum alloys found in differentials and transfer cases. This reduces corrosion and wear, helping components last longer under severe-service conditions.

• Corrosion inhibitors for non-ferrous metals
• Anti-wear agents for prolonged component life
• Stable chemistry that resists degradation under load
• Formulated to outperform many OEM and premium comparators

Who is this for? Triax DTF-2 75W-85 full-synthetic fluid is aimed at DIY enthusiasts, professional mechanics, fleet operators and performance drivers who need a robust GL-5 lubricant for differentials, transfer cases, and drivetrain gearsets. It’s appropriate when manufacturers call for 75W-85 GL-5 or when limited-slip capability and superior metal protection are desired. Always check your vehicle handbook for the correct specification and service intervals before changing fluids.