COGENT GUARD HD SAE 140 Heavy Duty Gear Oil API GL-5
Product Description:
COGENT GUARD HD 140 GL-5 SERIES represents a line of high-performance, premium-grade heavy duty gear oil fluids engineered from top-tier base oils and a sophisticated, multi-functional additive framework. This robust automotive gear oil is specifically developed to provide exceptional service in passenger and commercial vehicle drivetrain components, focusing on demanding heavy-duty manual transmissions, drive axles, and final drives.
Formulated as an advanced extreme pressure gear oil, this product delivers enhanced shear stability and high film strength under extreme structural pressure, heavy shock loads, and high-vibration operating conditions. The balanced formulation acts as an optimized differential gear oil and final drive oil, ensuring that critical contact points within hypoid gears remain insulated from premature surface fatigue, micro-pitting, and wear. It serves as a dependable choice for maintaining drivetrain protection and clean mechanical operation across versatile logistics, transit, and off-highway heavy machinery sectors.
Features & Benefits:
• Exceptional thermal and oxidation stability protects against deposit formation and oil thickening, thus maintaining the life and performance of the lubricant and transmission.
• Outstanding anti-wear properties and excellent film strength provide exceptional equipment protection, which not only results in fewer breakdowns but also helps improve transmission efficiency.
• Excellent rust and corrosion protection ensures longer component life.
• Direct compatibility with industrial seals and gaskets leads to minimized oil leakage and reduced fluid contamination
Applications:
• Suitable for use in all passenger cars, along with on-highway light and heavy-duty transport vehicles requiring high-viscosity axle gear oil or gearbox oil performance.
• Ideal for heavy-duty manual transmissions, drive axles, and final drives requiring API GL-5 level performance characteristics.
• Tailored for demanding off-highway industries including construction, mining, quarrying, and agriculture where heavy machinery operates under rugged conditions.
• Recommended for other heavy-duty industrial gear lubricant applications and automotive assemblies involving hypoid gears operating under configurations where high-speed/shock load, high-speed/low-torque, and/or low-speed/high-torque conditions exist.
Specifications :
COGENT GUARD HD 140 GL-5 SERIES meets or exceeds the following international and OEM :
• API GL-5
• MIL-L-2105D (U.S. Military Specification)
Typical Characteristics:
COGENT GUARD | Test Method | Units | 90 | 140 | 80W-90 | 85W-90 | 85W-140 |
Density @ 15°C | ASTM D 4052 | gm/cc | 0.890 | 0.910 | 0.888 | 0.890 | 0.908 |
Viscosity @ 40°C | ASTM D 445 | cSt | 145 | 447 | 146 | 190 | 353 |
Viscosity @ 100°C | ASTM D 445 | cSt | 14.3 | 30.0 | 14.7 | 17.4 | 25.6 |
Viscosity Index | ASTM D 2270 | — | 96 | 95 | 101 | 97 | 95 |
Pour Point | ASTM D 97 | °C | -12 | -9 | -24 | -24 | -15 |
Flash Point (COC) | ASTM D 92 | °C | 240 | 260 | 230 | 236 | 248 |
Copper Strip Corrosion | ASTM D 130 | — | 1B | 1B | 1B | 1B | 1B |
Foam Seq I, II, III | ASTM D 892 | ml/ml | 10/0 | 20/0 | 10/0 | 10/0 | 20/0 |
Phosphorus | ASTM D 4951 | %wt | 0.055 | 0.055 | 0.055 | 0.055 | 0.055 |
Note: The above figures are typical of blends with normal production tolerance and do not constitute a specification

