Mobil Delvac 1 Gear Oil 75W-140
Mobil Delvac 1 Gear Oil 75W-140 is a fully synthetic drivetrain lubricant engineered to meet the demanding requirements of modern heavy-duty equipment. Designed for use in axles, final drives and gear systems requiring API GL-5 performance, this advanced lubricant is formulated with synthetic base stocks and a high-performance additive system. It delivers outstanding protection in applications exposed to extreme pressures, shock loading and wide temperature variations.
One of the key advantages of Mobil Delvac 1 Gear Oil 75W-140 is its exceptional load-carrying capability. Heavy-duty drivetrains often operate under high torque and shock load conditions, which can lead to gear wear and damage. The advanced formulation provides strong extreme pressure protection, helping to minimise wear and extend the life of gears and bearings in severe operating environments.
Mobil Delvac 1 Gear Oil 75W-140 also offers outstanding thermal and oxidation stability. The lubricant resists breakdown at high operating temperatures, helping prevent deposit formation and maintain clean gear components. This contributes to longer lubricant life, improved reliability and reduced maintenance requirements in both on-highway and off-highway applications.
Another important benefit of Mobil Delvac 1 Gear Oil 75W-140 is its excellent viscosity stability and shear resistance. The fluid maintains its viscosity and film strength under severe operating conditions, ensuring consistent lubrication and protection over extended service intervals. This helps prevent metal-to-metal contact and supports long-term durability of drivetrain components.
Mobil Delvac 1 Gear Oil 75W-140 also delivers excellent low-temperature performance. The synthetic formulation ensures good fluidity at low temperatures, enabling easy start-up and rapid lubrication of components. At the same time, it provides strong oil film thickness at high temperatures, ensuring reliable protection across a wide operating range.
Mobil Delvac 1 Gear Oil 75W-140 is recommended for use in heavy-duty manual transmissions, axles, differentials and final drives in trucks, buses and off-highway equipment such as construction, mining and agricultural machinery. It is also suitable for industrial gear applications where high-performance extreme pressure lubricants are required. However, it is not intended for applications requiring API GL-4 performance or for transmissions designed to use engine oils or ATF fluids.
Physical characteristics include a kinematic viscosity of approximately 182 mm²/s at 40°C and 25 mm²/s at 100°C, with a viscosity index of around 170. Mobil Delvac 1 Gear Oil 75W-140 has a density of approximately 0.89 g/cm³ at 15°C, a flash point of approximately 203°C and a pour point of approximately −45°C, supporting reliable lubrication performance across a wide range of operating conditions.
