Triax Synergy Gear MT 75W-90 GL-4 Manual Transmission Fluid — 1 Gal, Full Synthetic for Smooth Precise Shifts

TRIAX Synergy Gear MT 75W-90 GL-4 is a full-synthetic manual transmission fluid engineered for smooth, repeatable shifts while protecting brass and bronze synchronizers.

Designed for a wide variety of North American, European, and Asian vehicles, this 1-gallon formula balances friction control, thermal stability, and shear resistance to maintain consistent shift feel across temperatures and under load. It meets API GL-4 performance and is compatible with many OEM specifications, making it suitable for street, track, and heavy-duty use.

How does TRIAX Synergy Gear MT improve shifting performance?

This fluid is formulated to provide a tuned friction profile that allows synchronizer cones to engage cleanly and immediately carry load. The result is short, precise shifts with minimal notchiness when cold and stable feel as the fluid ages.

• Tuned friction modifiers for predictable cone engagement
• Rapid shear response to avoid slip during engagement
• Long-lasting shift quality through the drain interval

Will this oil damage brass or bronze synchronizers?

TRIAX uses non-reactive sulfur carriers and magnesium-based additives to avoid corrosive interactions with yellow metals. That means synchronizers, sleeves, and other soft-metal components are protected throughout normal service life.

• Formulated for compatibility with brass and bronze parts
• Reduces risk of sulfur-induced corrosion
• Maintains mechanical tolerances and engagement surfaces

Can it handle heat, shear, and continuous heavy use?

Being fully synthetic, the fluid resists shear breakdown and foaming under sustained gear mesh and high speeds. It preserves film strength and lubricity at elevated operating temperatures, helping gears run quieter and smoother even under demanding conditions.

• High shear stability for consistent viscosity under load
• Excellent foam resistance for uninterrupted lubrication
• Broad elastomer compatibility for seals and gaskets

Which vehicles and OEM specs is this compatible with?

TRIAX Synergy Gear MT covers many common OEM requirements across regions, making it a versatile choice when manufacturer guidance calls for API GL-4 75W-90 or similar specifications. Always cross-check your vehicle’s service manual before changing fluids.

• Compatible with VW/Audi, BMW, Mercedes-Benz, Ford, GM, Toyota, Mazda, Hyundai/Kia, Nissan, Jeep, and more
• Meets API GL-4 75W-90 performance level
• Suitable for street, track, and heavy-duty transmissions

Who is this for: technicians, performance enthusiasts, and fleet managers who need a manual transmission fluid that offers consistent, precise shifting and long-term protection for synchronizers and gears. If your vehicle or gearbox specification calls for a GL-4 75W-90 or lists the OEM specs referenced here, TRIAX Synergy Gear MT provides a dependable full-synthetic option for daily driving, spirited use, or demanding service cycles.