Mobilube PTX 75W-90
Mobilube PTX 75W-90 is a high-performance multipurpose gear lubricant developed using synthetic base fluid technology and advanced additive systems. It is specifically engineered to deliver outstanding performance in high-performance transaxles, including those found in Porsche 911 vehicles. The formulation provides excellent low-temperature fluidity combined with high-temperature stability, ensuring reliable lubrication across a wide range of operating conditions.
One of the key advantages of Mobilube PTX 75W-90 is its exceptional low-temperature performance. The lubricant remains fluid at very low temperatures, allowing for smoother gear engagement and easier shifting during cold start-up. This helps reduce wear and improves overall driving performance compared to conventional gear oils.
Mobilube PTX 75W-90 also offers excellent synchromesh compatibility and shiftability. The formulation is designed to ensure smooth gear changes while maintaining durability of synchroniser components, helping extend transmission life and improve driving comfort.
Another important benefit is its strong wear protection under severe operating conditions. The advanced additive system provides a high level of protection against wear, even under high loads and extreme pressures, helping to extend the life of gears and bearings.
Mobilube PTX 75W-90 also provides good thermal and oxidation stability, helping resist degradation at elevated temperatures and maintaining consistent performance over extended service intervals. This ensures reliable operation and reduced maintenance requirements.
Mobilube PTX 75W-90 is recommended for high-performance transaxles and gear systems requiring API GL-4 or GL-5 performance levels. It is particularly suited for applications where excellent shiftability, durability and wide temperature performance are essential.
Physical characteristics include SAE 75W-90 viscosity grade with kinematic viscosity of approximately 77.6 mm²/s at 40°C and 14.5 mm²/s at 100°C. Mobilube PTX 75W-90 has density of approximately 0.849 kg/L, flash point of approximately 226°C and an extremely low pour point of approximately −60°C. The lubricant delivers outstanding all-temperature performance, smooth operation and long-lasting protection in high-performance drivetrain applications.
