Shell Spirax MB 90
Shell Spirax MB 90 is a high-quality heavy-duty axle and gear oil formulated to provide reliable protection in demanding automotive drivetrain applications. Developed with advanced extreme-pressure additive technology and carefully selected base oils, the lubricant delivers excellent protection against wear, corrosion and oxidation in heavily loaded gear systems. The formulation is specifically designed to meet the requirements of automotive transmissions and axle systems operating under severe load and speed conditions.
One of the key advantages of Shell Spirax MB 90 is its strong extreme-pressure performance. The lubricant contains specialised additives that help protect gear teeth under high load conditions commonly encountered in spiral-bevel and hypoid axle systems. These additives form a durable protective film between metal surfaces, helping to prevent metal-to-metal contact and reduce the risk of scuffing or pitting of gear components. This protection helps extend the service life of drivetrain components while maintaining reliable performance in demanding operating environments.
Shell Spirax MB 90 also provides excellent protection against wear and corrosion. The advanced additive system helps prevent rust and corrosion on metal surfaces while maintaining stable lubrication performance over time. This protection is particularly important in axle and transmission systems where moisture or contaminants may be present. By preventing corrosion and maintaining a protective oil film, the lubricant helps ensure long-term reliability and durability of critical drivetrain components.
Another important benefit of Shell Spirax MB 90 is its strong resistance to oxidation and thermal degradation. Gear oils operating under heavy loads can experience elevated temperatures that may lead to oil breakdown and deposit formation. The formulation’s high oxidation stability helps maintain oil performance and prevent the formation of harmful deposits that could compromise lubrication efficiency. This helps ensure stable lubrication performance and extended oil life under demanding operating conditions.
Shell Spirax MB 90 is recommended for use in heavy-duty automotive transmissions and axle systems. It is particularly suited for rear axle applications and gear systems that operate under severe load-speed conditions, including medium and low-speed spur or helical gears as well as spiral-bevel and hypoid axle units. The lubricant is blended to meet the requirements of major equipment manufacturers including Mercedes-Benz and ZF for automotive drivetrain applications.
The product meets key industry and OEM specifications including API GL-5 and US Military specification MIL-L-2105B. It also carries manufacturer approvals including Mercedes-Benz Sheet 235.0, MAN 342 Typ M1 and ZF TE-ML 16C, 17B, 19B and 21A along with Volvo 97310 requirements. Physical characteristics include a kinematic viscosity of approximately 184 mm²/s at 40°C and 16.9 mm²/s at 100°C with a viscosity index of approximately 97. The oil has a density of approximately 909 kg/m³ at 15°C, a flash point of approximately 175°C and a pour point of approximately –18°C, supporting reliable lubrication performance across demanding drivetrain operating conditions.
